<s>
PowerMapper	B-Protocol
is	O
a	O
web	B-Application
crawler	I-Application
that	O
automatically	O
creates	O
a	O
site	O
map	O
of	O
a	O
website	O
using	O
thumbnails	O
of	O
each	O
web	O
page	O
.	O
</s>
<s>
Site	O
maps	O
are	O
the	O
website	O
directories	O
which	O
can	O
be	O
easily	O
fetch	O
by	O
the	O
Web	B-Application
crawlers	I-Application
in	O
order	O
to	O
learn	O
the	O
websites	O
pages	O
and	O
links	O
.	O
</s>
<s>
Site	O
maps	O
can	O
also	O
be	O
exported	O
in	O
XML	O
sitemaps	O
format	O
for	O
use	O
by	O
the	O
Google	B-Application
,	O
Yahoo	B-Application
and	O
MSN	B-Application
search	I-Application
engines	O
.	O
</s>
