Interactive games (poker, blackjack, gin, euchre etc.) that you can play with people from around the world. Also has crossword puzzles. note: you'll need to use the name and password from when you signed up for Yahoo! email.

Interactive "game show" style games played with people from around the world. note: you'll have to register and pick a user name just like you did with Yahoo!

Has a daily and weekly puzzles (mind benders etc.) and crossword puzzles. Also has some fun 1 player games.

Register, and then fill out opinion surveys for the chance to win prizes. I've won a prize, so it's the real deal...and it doesn't take long.

Register at this website to collect points that can be redeemed for gift certificates (Spiegel catalogue included!). It takes a while to collect enough points, but you do it by filling out surveys and visiting websites, so it's not too taxing.  Let me know if you're going to join though, so I can get the referral points :)