I was working on ringtone affiliation again using Overture, MSN adcenter, and Adwords this weekend.  I bought Keyword Elite to test out with my ringtone site.  MSN & Overture seems don;t like keyword with Brand Name on such as Verizone.  Last 3 days, my ROI is close 3:1, but not enough clicks so earning is very small.  Spent like $50 and got close to $135.  I will continue to working on keywords and more post will coming in.