LifeinAsia - 4:04 pm on Apr 22, 2011 (gmt 0)

Personally, I feel that doing it really downgrades your site- it sounds like a form of begging. No matter how you spin it, it's going to come across like "Please buy something from my partners to help me out" to some people. Some people will be turned off by that. And some people will probably change their clicking habits to help you out. The mix depends on the type of visitors you get.