Couple of online tools...

[sowhat-x]

...that might come handy when in need to quickly analyze stuff/gather info etc...

Online viewer for PDF and Word:
http://view.samurajdata.se/

Online Language Identification:
http://www.faganfinder.com/translate/identify.php
Check the links here as well...

[proletsearch]

Thanks for the handy websites!

[Orac]

I find this site can be of use for a number of different things, http://serversniff.net/index.php

Apart from the usual whois stuff, it contains some usefull crypto tools.

[sowhat-x]

He-he...already spotted 
http://www.malwaredomainlist.com/forums/index.php?topic=1148.0

[sowhat-x]

http://w3dt.net/

DNS Lookup,Whois,Url decoding stuff,Text-based web browsing,and even...HTTP Fingerprinting ;-)

[tjs]

whoah.. w3dt.net is really nice! thx for sharing!