QI for YSM doesn't make a lot of since to me. I've read some stuff about it and it sounds like most important is the conversion ratio. Based on that I'm running about a 4% ratio in position 42 which is is very good for this highly competitive niche. I have the keyword in the title of the ad. Any suggestions would be greatly appreciated.
Relative CTR seems to be the most important part of the Yahoo! Score. So even if you have a 4% CTR others have a much better CTR when in your position or similar positions.