any of these sites capture your demographic information in exchange for your eyeballs. And you get to play games, earn money, or read great episodic stories. Sounds like a fair trade to me! But seriously, I warn you that giving out your e-mail address means that you will get junk e-mail. CyberGold (see below) has been especially annoying.
The Riddler You can volunteer your demographic information to have access to games. This site has a number of trivial games on different topics. It also uses interstitials before you enter a game which almost lured me into clicking on the wrong place. You can collect caps for winning games and exchange them for prizes.
CyberGold I plan on using this site to make some extra cash! You register your information and then get 50 cents for looking at ads. After you have $20.00 in the bank, they pay out.
Contest World Contests galore!
Yoyodyne More contests and advertising.
You Don't Know Jack Maybe you do know Jack. Play trivial games and watch interstitials flash by.
Netstakes Register your demographics to win a prize.
Mind's Eye Fiction At this site you "buy" the end of a story by looking at advertising.
Want to participate in a survey about web usage? Check out this site:
How about some personalization and targeting tools? Check out:
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