Gokano.com is a relatively new site with not much to do, but the reward sturcture is perfectly reasonable. Log in daily to get 1 point, complete monthly missions for an additional point, and refer friends. Just to give you an idea – a 16GB Kingston DataTraveler 100G3 (Usb 3.0) pendrive is 30 points… so 1 month of doing the bare minimum and you should at least get a reward in theory (if it’s in stock). A GoPro HD Hero is 375 points… so 1 year of hanging around here and you’ll be about ready to shoot some quality helmet cam vids.
[Aug 25, 2015 Update] Some of the point values might increase, and there is an extremely limited supply of rewards. In the last round the rewards sold out in less than 10 minutes. The site’s still worth a try though.