For example:
Today I might receieve 50 clicks at an average CPC of $6 totalling $300. BUT they will not tell you the actual data on each click - again just the average. And they won't tell you what position each click was at.
For all the issues with Yahoo-Overture, at least they provide this data. It's really hard to be stratgeic when Google only gives you average data.
I just found out that they consider actual click data business sensitive.