Refer.ly is a new site that you really should see to understand yourself, basically they manage the affiliate relationships for you with around 400 retailers and let you shorten links in seconds to earn money. They offer high commission rates.
Number of sales - Commission rate
1-10 - 4%
11-50 - 5%
51-100 - 6%
101 - 300 - 7%
301 - 500 - 8%
Number of sales - Commission rate
1-10 - 4%
11-50 - 5%
51-100 - 6%
101 - 300 - 7%
301 - 500 - 8%