It's a site meant to provide "temporary boredome relief" through various stimulating activities, including lots of games. I don't usually get bored, but I am good at using fun and games to procrastinate. This is the one that has me hooked lately. I also like their solitaire game. I can actually complete it.
When I was younger I was always intimidated by puzzles and brain teasers. I gave up so quickly that I think I may have deprived myself of essential challenges. So now, I'm making up for it by playing every day. ;)
Check it out. I'm sure you'll find something to amuse you!