http://www.adperk.com/
This site you watch video's (commercials) they can be 30 seconds, 2 minutes, etc. In return you rec'v the selected magazine they are offering in exchange for your time. No strings attached and these do come.
The offers change periodically. (FYI - When watching this put aside some time - it doesn't take too long but it's not fast either & at the end of the video you have to put the security code so be careful not to walk away too long
)
They are offering right now as of this post: NEW - Free Exhibition PASS -
LA Convention Center, Dwell Rewards - Dwell on Design Jun 7-8,2008 - 10 credits needed/10 videos to watch.
You have to register and log in : AVAILABLE: at time of this posting.
Popular Science, Good Housekeeping, Field & Stream, Ode, Skiing