Toilet Training: An Online Guide to Urinal Etiquette
Virtual Public Restroom - The Toilet of the Web
The Toilet Seat Controversy
tokyo toilet map
some other toilet site
Daniel Malone Artist.Chicken sight, the total poop.
Hygolet (that's a toilet seat replacement for standard seats providing the user with a new plastic sleeve protective cover)
http://www.barnowl.demon.co.uk/wc
http://album.nest.nl/AA/hygiene/hygiene.htm (only dutch)
http://www.toiletology.com/emergenc.htm

Do you think an amazing link is missing? Then tell me!