Have you been successful with affiliate marketing programs?

If you have had success with affiliate marketing programs, I would like to know what you think the key to your success has been.

Is there an Affiliate Marketing Program for Yahoo site builder? ?

I'm going to be recommending Site Builder to colleagues and would like to be paid for that effort. Does any one know if an affiliate program exist for site builder?

I'm looking for makeup companies that offer affiliate marketing programs?

So far the only companies that I could find that offer this service is Smashbox and Sephora. If you guys can list companies that offer affiliate marketing and their links that would be awesome. I'm focusing on the beauty sector ( makeup, skincare)
Thanks in advance!

Which Affiliate Marketing Program offers many magazines to promote for a commission?

I tried paydotcom.com but they do not have normal lifestyle magazines. I want magazines which talk about relationships, fashion etc. I have tried looking for an affiliate program with such to no avail.