We all know a few sites that are meaningless, Zombo.com, Penisland.net, and of course this site... but here's a few more...
All these links are safe for work.
thispeanutlookslikeaduck.com - Yes, you guessed it, it's just pictures of things that might go quack.
purple.com - A movie wasn't enough, now there is a website about purple.
isittuesday.com - If you forget if it's Tuesday or not. I'm gonna check back tomorrow to see if it says "Yes".
holdthebutton.com - a stupid button game.
shoopdawhoop.com - Your guess is as good as mine.
and lastly, my favorite of the bunch:
Defiantdog.com -- Go ahead, try to get him to sit.