alika - 6:26 pm on Jan 26, 2011 (gmt 0)

First of all, Interest-Based seems to be a low ctr

Like everything with Adsense, it will be interesting to know where IBAs get very good CTRs (like in my websites where IBA's CTR is 5 times that of contextual ads), and what topics/type of websites they have low CTRs.