I challenge you to find a website belonging to one of the following top level domains:

[list][li].biz[/li][li].info[/li][/list]

That is:

[list][li]Popular or semi-popular[/li][li]Not pr0n[/li][li]Nice (not malicious)[/li][/list]

I use this site a lot!
http://www.regular-expressions.info/

http://www.mattisright.info
http://www.javaop.info

Those top levels are banned on a lot of firewalls by default because they're nothing but porn/hacker sites/etc.