<s>
Mobile	O
social	O
networking	O
is	O
social	O
networking	O
where	O
individuals	O
with	O
similar	O
interests	O
converse	O
and	O
connect	O
with	O
one	O
another	O
through	O
their	O
mobile	O
phone	O
and/or	O
tablet	B-Device
.	O
</s>
<s>
Much	O
like	O
web-based	O
social	O
networking	O
,	O
mobile	O
social	O
networking	O
occurs	O
in	O
virtual	B-Architecture
communities	I-Architecture
.	O
</s>
<s>
Many	O
web-based	O
social	O
networking	O
sites	O
,	O
such	O
as	O
Facebook	B-Application
and	O
Twitter	B-Application
,	O
have	O
created	O
mobile	B-Application
applications	I-Application
to	O
give	O
their	O
users	O
instant	O
and	O
real-time	O
access	O
from	O
anywhere	O
they	O
have	O
access	O
to	O
the	O
Internet	O
.	O
</s>
<s>
Additionally	O
,	O
native	O
mobile	B-Application
social	I-Application
networks	I-Application
have	O
been	O
created	O
to	O
allow	O
communities	O
to	O
be	O
built	O
around	O
mobile	O
functionality	O
.	O
</s>
<s>
More	O
and	O
more	O
,	O
the	O
line	O
between	O
mobile	O
and	O
web	O
is	O
being	O
blurred	O
as	O
mobile	B-Application
apps	I-Application
use	O
existing	O
social	O
networks	O
to	O
create	O
native	O
communities	O
and	O
promote	O
discovery	O
,	O
and	O
web-based	O
social	O
networks	O
take	O
advantage	O
of	O
mobile	O
features	O
and	O
accessibility	O
.	O
</s>
<s>
While	O
mobile	O
and	O
web-based	O
social	O
networking	O
systems	O
often	O
work	O
symbiotically	O
to	O
spread	O
content	O
,	O
increase	O
accessibility	O
,	O
and	O
connect	O
users	O
,	O
consumers	O
are	O
increasingly	O
spending	O
their	O
attention	O
on	O
native	O
apps	B-Application
compared	O
to	O
web	B-Application
browsers	I-Application
.	O
</s>
<s>
The	O
evolution	O
of	O
social	O
networking	O
on	O
mobile	O
networks	O
started	O
in	O
1999	O
with	O
basic	O
chatting	B-Protocol
and	O
texting	O
services	O
.	O
</s>
<s>
Features	O
include	O
text-only	O
chat	B-Protocol
via	O
chat	B-Protocol
rooms	O
.	O
</s>
<s>
The	O
services	O
of	O
this	O
generation	O
's	O
mobile	B-Application
social	I-Application
networks	I-Application
can	O
be	O
used	O
on	O
a	O
pay-as-you-go	O
or	O
subscription-to-service	O
basis	O
.	O
</s>
<s>
The	O
introduction	O
of	O
3G	B-Architecture
and	O
camera	O
phones	O
added	O
many	O
features	O
such	O
as	O
uploading	O
photos	O
,	O
mobile	O
search	O
for	O
person	O
based	O
on	O
profile	O
,	O
and	O
contacting/flirting	O
with	O
another	O
person	O
anonymously	O
.	O
</s>
<s>
The	O
services	O
of	O
this	O
generation	O
's	O
mobile	B-Application
social	I-Application
networks	I-Application
can	O
be	O
used	O
on	O
a	O
pay-as-you-go	O
or	O
subscription-to-service	O
basis	O
.	O
</s>
<s>
The	O
experiments	O
for	O
this	O
generation	O
mobile	B-Application
social	I-Application
networks	I-Application
started	O
in	O
2006	O
.	O
</s>
<s>
This	O
generation	O
brought	O
tremendous	O
changes	O
and	O
made	O
mobile	B-Application
social	I-Application
networks	I-Application
as	O
a	O
part	O
of	O
daily	O
life	O
.	O
</s>
<s>
The	O
features	O
include	O
a	O
richer	O
user	B-Application
experience	I-Application
,	O
automatic	O
publishing	O
to	O
web	O
profile	O
and	O
status	B-Application
updates	I-Application
,	O
some	O
Web	O
2.0	O
features	O
,	O
search	O
by	O
group/join	O
by	O
interests	O
,	O
alerts	B-Application
,	O
location-based	B-Application
services	I-Application
and	O
content	O
sharing	O
(	O
especially	O
music	O
)	O
.	O
</s>
<s>
Regional	O
distributions	O
of	O
this	O
generation	O
of	O
mobile	B-Application
social	I-Application
networks	I-Application
include	O
Japan	O
,	O
Korea	O
,	O
Western	O
Europe	O
,	O
and	O
North	O
America	O
.	O
</s>
<s>
The	O
features	O
of	O
this	O
generation	O
include	O
the	O
features	O
of	O
the	O
third	O
generation	O
,	O
the	O
ability	O
to	O
hide/mask	O
one	O
's	O
presence	O
,	O
asynchronous	O
video	B-Application
conversation	I-Application
,	O
multi-point	O
audio	O
chat	B-Protocol
conversation	O
with	O
one	O
button	O
,	O
and	O
multiplayer	O
mobile	O
gaming	O
.	O
</s>
<s>
Technologies	O
which	O
made	O
these	O
features	O
possible	O
are	O
Web	O
2.0	O
widgets	O
,	O
Flash	B-Operating_System
Lite	I-Operating_System
,	O
OpenSocial	B-Application
,	O
and	O
Open	O
Handset	O
Alliance	O
.	O
</s>
<s>
A	O
steady	O
increase	O
of	O
mobile	B-Application
application	I-Application
usage	O
over	O
the	O
past	O
few	O
years	O
has	O
contributed	O
to	O
the	O
rise	O
of	O
mobile	B-Application
social	I-Application
networks	I-Application
,	O
as	O
well	O
as	O
to	O
the	O
diversity	O
of	O
usage	O
of	O
mobile	B-Application
social	I-Application
networks	I-Application
.	O
</s>
<s>
As	O
the	O
use	O
of	O
mobile	B-Application
social	I-Application
networks	I-Application
has	O
increased	O
,	O
the	O
location-based	B-Application
services	I-Application
within	O
the	O
mobile	B-Application
social	I-Application
network	I-Application
has	O
also	O
been	O
increasing	O
.	O
</s>
<s>
Social	O
network	O
service	O
companies	O
now	O
provide	O
more	O
location-based	B-Application
services	I-Application
for	O
customers	O
 '	O
wide	O
use	O
of	O
the	O
mobile	O
devices	O
and	O
their	O
convenience	O
.	O
</s>
<s>
Similar	O
to	O
there	O
being	O
many	O
online	O
social	O
networking	O
sites	O
,	O
such	O
as	O
Facebook	B-Application
and	O
Twitter	B-Application
,	O
there	O
are	O
just	O
as	O
many	O
social	O
network	O
on	O
mobile	O
devices	O
.	O
</s>
<s>
Most	O
of	O
these	O
mobile	B-Application
apps	I-Application
offer	O
free	O
international	O
calling	O
and	O
texting	O
capabilities	O
.	O
</s>
<s>
Today	O
,	O
social	O
networking	O
apps	B-Application
are	O
not	O
just	O
for	O
the	O
social	O
aspect	O
,	O
but	O
are	O
frequently	O
used	O
for	O
professional	O
aspects	O
as	O
well	O
,	O
such	O
as	O
LinkedIn	O
,	O
which	O
is	O
still	O
constantly	O
growing	O
.	O
</s>
<s>
Many	O
messaging	O
apps	B-Application
are	O
very	O
popular	O
,	O
maybe	O
even	O
more	O
than	O
classical	O
texting	O
.	O
</s>
<s>
Some	O
social	O
network	O
platforms	O
,	O
such	O
as	O
Facebook	B-Application
,	O
have	O
their	O
own	O
native	O
messaging	O
applications	O
,	O
similar	O
to	O
Facebook	B-Protocol
Messenger	I-Protocol
.	O
</s>
<s>
Different	O
countries	O
have	O
a	O
certain	O
messenger	B-Protocol
that	O
is	O
predominant	O
,	O
like	O
China	O
with	O
WeChat	B-Application
,	O
Korea	O
with	O
KakaoTalk	B-Protocol
,	O
and	O
the	O
US	O
with	O
WhatsApp	B-Application
.	O
</s>
<s>
This	O
can	O
be	O
viewed	O
as	O
an	O
advanced	O
version	O
of	O
the	O
messenger	B-Protocol
category	O
.	O
</s>
<s>
In	O
addition	O
to	O
text	O
messages	O
,	O
audio	O
and	O
video	O
files	O
can	O
be	O
transmitted	O
among	O
a	O
group	O
,	O
such	O
as	O
Skype	B-Application
or	O
Oovoo	B-Protocol
,	O
which	O
are	O
forms	O
of	O
online	O
video	O
chatting	B-Protocol
.	O
</s>
<s>
In	O
the	O
case	O
of	O
Instagram	B-Application
and	O
Vine	B-Application
,	O
photos	O
and	O
videos	O
of	O
personal	O
lives	O
are	O
shared	O
to	O
either	O
friends	O
or	O
to	O
the	O
public	O
.	O
</s>
<s>
Similarly	O
,	O
Pinterest	B-Application
is	O
used	O
to	O
share	O
photos	O
,	O
but	O
on	O
a	O
more	O
community	O
level	O
.	O
</s>
<s>
Mary	O
Meeker	O
's	O
KPCB	O
report	O
stated	O
that	O
time	O
spent	O
on	O
short	O
video	O
apps	B-Application
climbed	O
360%	O
in	O
2017	O
.	O
</s>
<s>
The	O
largest	O
media	O
sharing	O
app	O
today	O
is	O
YouTube	B-General_Concept
,	O
which	O
allows	O
people	O
post	O
videos	O
and	O
share	O
with	O
the	O
public	O
.	O
</s>
<s>
Some	O
mobile	B-Application
social	I-Application
networks	I-Application
,	O
such	O
as	O
Yelp	B-Application
,	O
FourSquare	B-Application
and	O
YikYak	B-Application
,	O
allow	O
users	O
to	O
search	O
for	O
local	O
venues	O
.	O
</s>
<s>
Many	O
of	O
these	O
apps	B-Application
publish	O
crowd-sourced	O
reviews	O
and	O
tips	O
about	O
restaurants	O
,	O
shops	O
,	O
places	O
of	O
interest	O
and	O
more	O
.	O
</s>
<s>
Yelp	B-Application
and	O
FourSquare	B-Application
also	O
personalizes	O
each	O
user	O
's	O
database	O
according	O
to	O
their	O
latest	O
search	O
and	O
interest	O
to	O
make	O
searching	O
more	O
efficient	O
.	O
</s>
<s>
The	O
leader	O
in	O
this	O
category	O
is	O
Zynga	O
,	O
creators	O
of	O
Farmville	B-Application
and	O
Words	B-Application
with	I-Application
Friends	I-Application
,	O
though	O
it	O
has	O
suffered	O
a	O
decline	O
.	O
</s>
<s>
Hearthstone	B-Application
is	O
another	O
popular	O
mobile	O
game	O
where	O
players	O
use	O
monster	O
and	O
spell	O
cards	O
to	O
fight	O
each	O
other	O
.	O
</s>
<s>
Mobile	B-Application
social	I-Application
networks	I-Application
can	O
also	O
connect	O
people	O
outside	O
of	O
the	O
mobile	O
environment	O
.	O
</s>
<s>
Pokemon	B-Application
Go	I-Application
incorporated	O
augmented	B-General_Concept
reality	I-General_Concept
to	O
allow	O
players	O
to	O
catch	O
Pokémon	O
while	O
together	O
physically	O
while	O
outside	O
.	O
</s>
<s>
Facebook	B-Application
has	O
also	O
integrated	O
games	O
through	O
its	O
chat	B-Protocol
messenger	B-Protocol
.	O
</s>
<s>
These	O
are	O
location-based	O
apps	B-Application
that	O
allow	O
users	O
to	O
create	O
a	O
profile	O
and	O
are	O
matched	O
with	O
those	O
who	O
have	O
similar	O
interests	O
.	O
</s>
<s>
Tinder	B-Application
was	O
the	O
first	O
dating	O
app	O
that	O
started	O
the	O
trend	O
and	O
has	O
one	O
of	O
the	O
largest	O
user	O
base	O
.	O
</s>
<s>
Other	O
dating	O
apps	B-Application
include	O
Coffee	B-Application
Meets	I-Application
Bagel	I-Application
and	O
OkCupid	B-Application
.	O
</s>
<s>
These	O
sites	O
are	O
marked	O
with	O
serious	O
security	B-Application
measures	O
,	O
so	O
that	O
no	O
personal	O
details	O
are	O
released	O
without	O
the	O
user	O
's	O
consent	O
.	O
</s>
<s>
However	O
,	O
there	O
still	O
has	O
been	O
several	O
dangerous	O
incidents	O
that	O
rose	O
questions	O
of	O
whether	O
Tinder-like	O
apps	B-Application
are	O
safe	O
and	O
should	O
be	O
kept	O
around	O
.	O
</s>
<s>
Music	O
apps	B-Application
connect	O
people	O
by	O
sharing	O
playlists	O
and	O
being	O
able	O
to	O
see	O
what	O
other	O
people	O
are	O
listening	O
to	O
.	O
</s>
<s>
Spotify	B-Application
,	O
a	O
very	O
popular	O
music	O
site	O
,	O
is	O
also	O
used	O
to	O
social	O
networking	O
in	O
a	O
sense	O
that	O
people	O
can	O
see	O
what	O
their	O
friends	O
are	O
listening	O
to	O
at	O
the	O
moment	O
as	O
well	O
.	O
</s>
<s>
Users	O
can	O
also	O
follow	O
certain	O
artists	O
or	O
even	O
friends	O
that	O
they	O
want	O
to	O
,	O
which	O
is	O
a	O
form	O
of	O
“	O
liking	O
”	O
a	O
post	O
on	O
Facebook	B-Application
.	I-Application
</s>
<s>
Other	O
social	O
media	O
music	O
apps	B-Application
include	O
radio	O
stations	O
like	O
Pandora	B-Application
and	O
last.fm	B-Application
.	O
</s>
<s>
Recently	O
,	O
mobile	B-Application
social	I-Application
networks	I-Application
has	O
also	O
been	O
used	O
to	O
motivate	O
individuals	O
to	O
stick	O
to	O
their	O
fitness	O
and	O
health	O
goals	O
.	O
</s>
<s>
Strava	B-Application
is	O
another	O
mobile	B-Application
social	I-Application
network	I-Application
application	O
that	O
lets	O
you	O
keep	O
track	O
of	O
your	O
activities	O
using	O
GPS	O
and	O
analyze	O
your	O
performance	O
through	O
metrics	O
such	O
as	O
speed	O
and	O
distance	O
.	O
</s>
<s>
Mobile	B-Application
commerce	I-Application
,	O
or	O
m-commerce	B-Application
,	O
is	O
a	O
branch	O
of	O
e-commerce	O
,	O
that	O
is	O
available	O
in	O
a	O
form	O
of	O
apps	B-Application
and	O
mobile	O
sites	O
.	O
</s>
<s>
In	O
some	O
apps	B-Application
like	O
letgo	B-Application
,	O
it	O
is	O
easy	O
for	O
the	O
buyer	O
to	O
talk	O
to	O
the	O
seller	O
about	O
specifics	O
about	O
the	O
product	O
or	O
negotiate	O
the	O
price	O
and	O
this	O
assumes	O
a	O
form	O
of	O
social	O
networking	O
.	O
</s>
<s>
Some	O
major	O
e-commerce	O
sites	O
,	O
such	O
as	O
Amazon	B-Application
and	O
eBay	B-Application
,	O
are	O
also	O
available	O
in	O
apps	B-Application
,	O
so	O
that	O
people	O
can	O
shop	O
anytime	O
and	O
anywhere	O
.	O
</s>
<s>
Particularly	O
,	O
however	O
,	O
some	O
mobile	O
social	O
media	O
networks	O
add	O
m-commerce	B-Application
functionalities	O
to	O
their	O
applications	O
.	O
</s>
<s>
For	O
instance	O
,	O
there	O
is	O
the	O
case	O
of	O
the	B-Application
Facebook	I-Application
Marketplace	O
where	O
people	O
can	O
sell	O
and	O
purchase	O
products	O
through	O
their	O
mobile	O
devices	O
.	O
</s>
<s>
Many	O
e-commerce	O
and	O
m-commerce	B-Application
applications	O
are	O
also	O
increasingly	O
developed	O
to	O
interface	O
with	O
other	O
applications	O
such	O
as	O
mobile	O
payment	O
,	O
banking	O
,	O
and	O
ticketing	O
applications	O
so	O
customers	O
can	O
easily	O
pay	O
or	O
accept	O
payments	O
.	O
</s>
<s>
There	O
is	O
the	O
case	O
of	O
Instagram	B-Application
,	O
which	O
in	O
2018	O
became	O
open	O
to	O
merchants	O
using	O
the	O
Shopify	O
platform	O
.	O
</s>
<s>
Mobile	O
payment	O
social	O
networks	O
such	O
as	O
Venmo	O
and	O
Square	O
Cash	O
allow	O
for	O
person-to-person	O
money	O
transfer	O
between	O
family	O
and	O
friends	O
,	O
with	O
a	O
swipeable	O
feed	O
of	O
payment	O
details	O
similar	O
to	O
Facebook	B-Application
's	O
News	B-Application
Feed	I-Application
.	O
</s>
<s>
There	O
are	O
still	O
many	O
functionalities	O
of	O
mobile	B-Application
social	I-Application
networks	I-Application
that	O
do	O
not	O
fall	O
into	O
any	O
specific	O
categories	O
.	O
</s>
<s>
The	O
rise	O
of	O
the	O
digital	O
age	O
has	O
made	O
social	O
media	O
a	O
lasting	O
trend	O
,	O
Facebook	B-Application
is	O
still	O
the	O
leader	O
of	O
social	O
networks	O
,	O
were	O
initially	O
as	O
web-based	O
and	O
then	O
extended	O
towards	O
access	O
via	O
mobile	B-Application
browsers	I-Application
and	O
smartphone	B-Application
apps	I-Application
.	O
</s>
<s>
Compared	O
with	O
Twitter	B-Application
,	O
Instagram	B-Application
,	O
and	O
Pinterest	B-Application
,	O
Facebook	B-Application
continues	O
to	O
dominate	O
the	O
social	O
media	O
world	O
.	O
</s>
<s>
As	O
of	O
the	O
fourth	O
quarter	O
of	O
2015	O
,	O
823	O
million	O
Facebook	B-Application
users	I-Application
accessed	O
the	O
social	O
network	O
exclusively	O
through	O
mobile	O
device	O
,	O
exceed	O
from	O
526	O
million	O
users	O
in	O
the	O
previous	O
year	O
.	O
</s>
<s>
In	O
2016	O
,	O
there	O
was	O
Instagram	B-Application
started	O
as	O
mobile	O
and	O
later	O
developed	O
into	O
web-based	O
platforms	O
as	O
well	O
.	O
</s>
<s>
Moreover	O
,	O
in	O
the	O
United	O
States	O
,	O
a	O
study	O
named	O
the	O
usage	O
of	O
the	O
most	O
popular	O
mobile	O
social	O
networking	O
percentages	O
showed	O
that	O
social	O
media	O
audiences	O
spent	O
a	O
total	O
of	O
230	O
billion	O
minutes	O
on	O
Facebook	B-Application
in	O
2014	O
,	O
80%	O
higher	O
than	O
Instagram	B-Application
.	O
</s>
<s>
The	O
report	O
in	O
2017	O
showed	O
that	O
around	O
1	O
billion	O
users	O
will	O
visit	O
Facebook	B-Application
via	O
mobile	O
devices	O
and	O
during	O
this	O
year	O
,	O
the	O
US	O
market	O
plays	O
a	O
significant	O
role	O
with	O
nearly	O
80%	O
of	O
Facebook	B-Application
users	I-Application
using	O
mobile	O
devices	O
to	O
access	O
their	O
accounts	O
.	O
</s>
<s>
Facebook	B-Application
mobile	O
advertising	O
revenue	O
account	O
for	O
10	O
billion	O
dollars	O
and	O
occupy	O
for	O
74%	O
of	O
revenue	O
in	O
total	O
.	O
</s>
<s>
It	O
shows	O
that	O
by	O
2018	O
,	O
more	O
than	O
75%	O
of	O
the	B-Application
Facebook	I-Application
users	O
worldwide	O
will	O
access	O
the	O
service	O
via	O
their	O
mobile	O
phones	O
.	O
</s>
<s>
Safety	O
issues	O
(	O
including	O
security	B-Application
,	O
privacy	O
,	O
and	O
trust	O
)	O
in	O
mobile	B-Application
social	I-Application
networks	I-Application
are	O
concerned	O
about	O
the	O
condition	O
of	O
being	O
protected	O
against	O
different	O
types	O
of	O
failure	O
,	O
damage	O
,	O
error	O
,	O
accidents	O
,	O
harm	O
or	O
any	O
other	O
non-desirable	O
event	O
,	O
while	O
mobile	O
carriers	O
contact	O
each	O
other	O
in	O
mobile	O
environments	O
.	O
</s>
<s>
This	O
is	O
the	O
main	O
impulse	O
why	O
mobile	B-Application
social	I-Application
networks	I-Application
carry	O
disparate	O
and	O
intricate	O
safety	O
concerns	O
and	O
embrace	O
divergent	O
safety	O
challenging	O
problems	O
.	O
</s>
<s>
As	O
a	O
result	O
of	O
these	O
dangers	O
,	O
many	O
mobile	B-Application
social	I-Application
networks	I-Application
such	O
as	O
Twitter	B-Application
and	O
Facebook	B-Application
have	O
implemented	O
various	O
methods	O
for	O
protecting	O
user	O
safety	O
such	O
as	O
removing	O
harmful	O
users	O
,	O
detecting	O
malware	O
,	O
and	O
verifying	O
a	O
user	O
's	O
identity	O
;	O
however	O
,	O
these	O
policies	O
are	O
still	O
in	O
the	O
workings	O
.	O
</s>
<s>
The	O
distractions	O
caused	O
by	O
mobile	B-Application
social	I-Application
networks	I-Application
have	O
cause	O
numerous	O
accidents	O
due	O
to	O
the	O
user	O
not	O
paying	O
attention	O
to	O
their	O
surroundings	O
.	O
</s>
<s>
The	O
safety	O
issues	O
caused	O
by	O
distractions	O
from	O
mobile	B-Application
social	I-Application
network	I-Application
became	O
more	O
prominent	O
after	O
the	O
release	O
of	O
Pokémon	B-Application
Go	I-Application
in	O
July	O
2016	O
.	O
</s>
<s>
In	O
Pokémon	B-Application
Go	I-Application
,	O
users	O
can	O
catch	O
Pokémon	O
while	O
walking	O
around	O
outdoors	O
on	O
their	O
phones	O
.	O
</s>
<s>
In	O
California	O
,	O
two	O
men	O
fell	O
over	O
40	O
feet	O
from	O
an	O
ocean	O
bluff	O
while	O
playing	O
Pokémon	B-Application
Go	I-Application
.	O
</s>
<s>
In	O
Auburn	O
,	O
a	O
driver	O
went	O
off	O
the	O
road	O
and	O
hit	O
a	O
tree	O
because	O
he	O
was	O
playing	O
Pokémon	B-Application
Go	I-Application
while	O
driving	O
.	O
</s>
<s>
Another	O
safety	O
concern	O
arose	O
from	O
mobile	O
dating	O
applications	O
such	O
as	O
Tinder	B-Application
and	O
Hinge	O
,	O
where	O
single	O
people	O
are	O
matched	O
up	O
with	O
each	O
other	O
to	O
go	O
on	O
dates	O
.	O
</s>
<s>
In	O
England	O
and	O
Wales	O
,	O
there	O
were	O
204	O
reported	O
crimes	O
due	O
to	O
Tinder	B-Application
or	O
Grindr	B-Application
in	O
2014	O
.	O
</s>
<s>
On	O
November	O
23	O
,	O
2016	O
,	O
Stephen	O
Port	O
was	O
convicted	O
for	O
rape	O
and	O
murder	O
of	O
4	O
men	O
who	O
he	O
met	O
on	O
the	O
Grindr	B-Application
.	O
</s>
<s>
Increasing	O
the	O
safety	O
procedures	O
regarding	O
mobile	O
dating	O
applications	O
is	O
an	O
ongoing	O
work	O
by	O
the	O
police	O
force	O
and	O
by	O
the	O
developers	O
of	O
these	O
mobile	B-Application
applications	I-Application
.	O
</s>
<s>
While	O
Japan	O
,	O
Korea	O
,	O
and	O
China	O
have	O
a	O
higher	O
usage	O
rate	O
of	O
mobile	B-Application
social	I-Application
networks	I-Application
compared	O
to	O
other	O
western	O
countries	O
,	O
the	O
United	O
States	O
is	O
a	O
prevalent	O
user	O
of	O
mobile	B-Application
social	I-Application
networks	I-Application
.	O
</s>
<s>
iPhones	O
have	O
transformed	O
the	O
mobile	B-Application
social	I-Application
network	I-Application
market	O
,	O
and	O
today	O
there	O
is	O
numerous	O
mobile	O
development	O
for	O
social	O
network	O
apps	B-Application
.	O
</s>
<s>
The	O
US	O
mobile	O
social	O
networking	O
market	O
experienced	O
steady	O
growth	O
in	O
2008	O
with	O
6.4	O
million	O
mobile	B-Application
social	I-Application
network	I-Application
users	O
.	O
</s>
<s>
According	O
to	O
Statista.com,	O
the	O
most	O
popular	O
social	O
media	O
networking	O
app	O
as	O
of	O
2016	O
is	O
Facebook	B-Application
at	O
123.55	O
million	O
monthly	O
users	O
,	O
surpassing	O
the	O
next	O
most	O
popular	O
app	O
,	O
Facebook	B-Protocol
Messenger	I-Protocol
,	O
which	O
has	O
97.86	O
million	O
monthly	O
users	O
.	O
</s>
