A site I really like is WikiHow. It's like Wikipedia, but for things that you can do. It's basically a place where people share techniques for accomplishing anything from hacking a coke machine to escaping from handcuffs to washing windows (that's what I was looking for this time - I'm washing my windows and wondered if there wasn't some way of making it easier. Answer: not really).
Anyway, The list of most popular pages on WikiHow is immensely entertaining reading and not a little sad.
1. Main Page (32,542,616 views)
2. Categories (2,826,660 views)
3. French Kiss (2,215,807 views)
4. Get Six Pack Abs (2,078,210 views)
5. Lose Weight Fast (1,814,553 views)
6. Love (1,748,584 views)
7. Draw Graffiti Names (1,032,296 views)
8. Use Peter Answers (1,022,066 views)
9. Kiss (989,762 views)