chikung - 12:27 am on Mar 25, 2007 (gmt 0)

"It looks like publishers can choose a specific ad or just choose a category and let Google pick the what they think are the best ads(s) in that category. "

If this is the case, it won't be much interesting. I wish there has to be a wide range of colorful banners as well as text and we need to get the chance to view it exactly the way they are going to be displayed on the site. Thats the way CPA work according to me.