Best Rated PPC (Yahoo, Google, MSN, MySpace, Facebook)?

[olimits7]

Hi,

I just recently started campaigns on Google, Yahoo, MSN, MySpace, and Facebook.

I was wondering for people who have had experience working with the above PPC engines; which PPC engine had the best results for you? best conversion rates? etc...?

Thank you,

olimits7

[travelin cat]

The only system that worked for us was Google. I could not get any ROI through Yahoo, MSN or any other of the smaller ppc's