I love free. I love it so much that I subscribe to several different "bargain" and "free stuff" blogs just to get free stuff. Today on the Free Stuff Stimes I saw free trading card and I signed up. Here's the link:
Free Agassi Trading Card
Now here's a secret you might want to pay attention to: create a new email account with one of the free bulk email services, like yahoo, or gmail or whatever, and use that account to sign up for all your freebies. Then your regular email won't get junked up with spam, though it probably will anyway.
Every now and then I run across free trading card offers, I always try to pass them along.