<s>
Flock	B-Protocol
is	O
a	O
discontinued	O
web	B-Application
browser	I-Application
that	O
specialized	O
in	O
providing	O
social	O
networking	O
and	O
Web	O
2.0	O
facilities	O
built	O
into	O
its	O
user	B-Application
interface	I-Application
.	O
</s>
<s>
Earlier	O
versions	O
of	O
Flock	B-Protocol
used	O
the	O
Gecko	B-Language
HTML	B-Protocol
rendering	I-Protocol
engine	I-Protocol
by	O
Mozilla	B-Operating_System
.	O
</s>
<s>
Version	O
2.6.2	O
,	O
released	O
on	O
January	O
27	O
,	O
2011	O
,	O
was	O
the	O
last	O
version	O
based	O
on	O
Mozilla	B-Application
Firefox	I-Application
.	O
</s>
<s>
Starting	O
with	O
version	O
3	O
,	O
Flock	B-Protocol
was	O
based	O
on	O
Chromium	B-Language
and	O
so	O
used	O
the	O
WebKit	B-Language
rendering	O
engine	O
.	O
</s>
<s>
Flock	B-Protocol
was	O
available	O
as	O
a	O
free	O
download	O
,	O
and	O
supported	O
Microsoft	B-Application
Windows	I-Application
,	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
,	O
at	O
one	O
time	O
,	O
Linux	B-Application
as	O
well	O
.	O
</s>
<s>
Support	O
for	O
Flock	B-Protocol
was	O
discontinued	O
in	O
April	O
2011	O
.	O
</s>
<s>
Flock	B-Protocol
was	O
the	O
successor	O
to	O
Round	O
Two	O
,	O
who	O
raised	O
money	O
from	O
Bessemer	O
Venture	O
Partners	O
,	O
Catamount	O
Ventures	O
,	O
Shasta	O
Ventures	O
and	O
other	O
angel	O
investors	O
.	O
</s>
<s>
Flock	B-Protocol
raised	O
$15	O
million	O
in	O
a	O
fourth	O
round	O
of	O
funding	O
led	O
by	O
Fidelity	O
Ventures	O
on	O
May	O
22	O
,	O
2008	O
,	O
for	O
an	O
estimated	O
total	O
of	O
$30	O
million	O
,	O
according	O
to	O
CNET	O
.	O
</s>
<s>
In	O
January	O
2011	O
,	O
Flock	B-Protocol
Inc	O
.	O
was	O
acquired	O
by	O
Zynga	O
.	O
</s>
<s>
The	O
browser	B-Application
has	O
been	O
discontinued	O
,	O
with	O
support	O
ending	O
April	O
26	O
,	O
2011	O
.	O
</s>
<s>
Flock	B-Protocol
2.5	O
integrated	O
social	O
networking	O
and	O
media	O
services	O
including	O
MySpace	B-Application
,	O
Facebook	B-Application
,	O
YouTube	B-General_Concept
,	O
Twitter	B-Application
,	O
Flickr	B-Algorithm
,	O
Blogger	B-Application
,	O
Gmail	B-Application
,	O
Yahoo	O
!	O
</s>
<s>
When	O
logging	O
into	O
any	O
of	O
the	O
supported	O
social	O
services	O
,	O
Flock	B-Protocol
could	O
track	O
updates	O
from	O
friends	O
:	O
profiles	O
,	O
uploaded	O
photos	O
,	O
and	O
more	O
.	O
</s>
<s>
Flock	B-Protocol
2.5	O
added	O
Twitter	B-Application
Search	O
functionality	O
,	O
multi-casting	O
of	O
status	O
updates	O
to	O
multiple	O
services	O
,	O
and	O
the	O
introduction	O
of	O
instant	B-Application
messaging	I-Application
via	O
Facebook	B-Protocol
Chat	I-Protocol
in	O
the	O
browser	B-Application
.	O
</s>
<s>
In	O
December	O
2007	O
,	O
Flock	B-Protocol
won	O
the	O
Mashable	O
Open	O
Web	O
Awards	O
for	O
Applications	O
and	O
Widgets	O
and	O
in	O
March	O
2008	O
,	O
Flock	B-Protocol
won	O
the	O
South	O
By	O
Southwest	O
Web	O
Award	O
for	O
Community	O
.	O
</s>
<s>
CNET	O
gave	O
the	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
version	O
of	O
Flock	B-Protocol
1.0	O
the	O
title	O
of	O
"	O
Best	O
Mac	O
Software	O
of	O
2007	O
"	O
.	O
</s>
<s>
PC	O
World	O
's	O
Harry	O
McCracken	O
reviewed	O
Flock	B-Protocol
as	O
his	O
"	O
New	O
Favorite	O
Web	B-Application
Browser	I-Application
"	O
.	O
</s>
<s>
In	O
February	O
2008	O
,	O
AOL	O
announced	O
that	O
it	O
would	O
discontinue	O
support	O
for	O
the	O
Netscape	B-Protocol
browser	I-Protocol
,	O
and	O
recommended	O
Flock	B-Protocol
and	O
Firefox	B-Application
as	O
alternative	O
browsers	B-Application
to	O
its	O
userbase	O
of	O
Netscape	B-Protocol
9	I-Protocol
users	O
.	O
</s>
<s>
For	O
the	O
Netscape	B-Protocol
8	O
userbase	O
,	O
AOL	O
recommended	O
only	O
the	O
Flock	B-Protocol
browser	I-Protocol
to	O
its	O
users	O
.	O
</s>
<s>
In	O
March	O
2008	O
,	O
Flock	B-Protocol
announced	O
that	O
they	O
had	O
seen	O
"	O
nearly	O
3	O
million	O
downloads	O
"	O
and	O
a	O
135%	O
increase	O
in	O
active	O
users	O
in	O
the	O
first	O
two	O
months	O
of	O
2008	O
.	O
</s>
<s>
They	O
also	O
announced	O
"	O
more	O
than	O
70	O
percent	O
of	O
Flock	B-Protocol
users	O
making	O
it	O
their	O
default	O
browser	B-Application
of	O
choice	O
"	O
.	O
</s>
<s>
In	O
May	O
2008	O
,	O
Flock	B-Protocol
won	O
the	O
Social	O
Networking	O
category	O
of	O
the	O
Webby	O
Awards	O
.	O
</s>
<s>
Flock	B-Protocol
was	O
nominated	O
for	O
this	O
award	O
along	O
with	O
Facebook	B-Application
,	O
Bebo	O
and	O
Ning	O
.	O
</s>
<s>
When	O
Flock	B-Protocol
's	O
discontinuation	O
was	O
announced	O
in	O
April	O
2011	O
,	O
reviewer	O
Joey	O
Sneddon	O
of	O
OMG	O
!	O
</s>
<s>
offered	O
the	O
analysis	O
:	O
"	O
Whether	O
this	O
was	O
down	O
to	O
poor	O
implementation	O
design	O
wise	O
(	O
one	O
needs	O
only	O
glance	O
at	O
'	O
Rockmelt	B-Protocol
 '	O
for	O
an	O
example	O
of	O
a	O
social	O
browser	B-Application
done	O
right	O
)	O
or	O
just	O
general	O
apathy	O
towards	O
having	O
alerts	O
from	O
twitter	B-Application
,	O
flickr	B-Algorithm
,	O
facebook	B-Application
,	O
digg	O
et	O
al	O
.	O
</s>
<s>
in	O
your	O
face	O
all	O
of	O
the	O
time	O
is	O
moot	O
:	O
Flock	B-Protocol
has	O
flocked	O
off	O
and	O
for	O
all	O
its	O
innovation	O
it	O
never	O
quite	O
lived	O
up	O
to	O
its	O
own	O
hype.	O
"	O
</s>
<s>
Upon	O
exiting	O
beta	O
,	O
Flock	B-Protocol
won	O
a	O
number	O
of	O
awards	O
:	O
</s>
