Peep it, yo!

This site offers free magazine subscriptions in a variety of topics. All you have to do is fill out a form. They make their money by finding out about you and then selling advertisements to people who want you as their demographic.

Doesn't cost you anything. The link is to diggnations promotion, as that's where I heard about the site. If you haven't checked out diggnation, it's a weekly video (also offered as just audio) podcast that covers some of the week's most popular stories on digg.com