Not sure if this has been posted here before, either way it's something I think people would be interested in.
Gaming Lagoon is a site you can sign up for, fill out surveys etc and get points on their site for doing that. Use those points to get free Xbox live memberships, xbox 360 controllers, memory cards, microsoft points etc...Tons of stuff for the Wii, PS3, World of Warcraft, etc...
Here's my referral link
If you sign up directly from that link (click sign up at the top) it helps me out. If you sign up under me and have any questions just PM me and I'll help you out.
Sign up for the site and the surveys with an email address you don't mind getting spammed, but that you can check, you'll have to confirm the email address for the site and for some offers. So just don't use your primary email because you will get spammed. I created an email account just to use for this site.
So far I've earned 40+ points on the site which was good enough to get me two microsoft points cards with 1600 points each. I got the second one yesterday.
Testimonials can be found here...