> But I'd like to hear from people hosting AdSense on their sites. Has profiling raised CTR rates significantly? Probably hard to tell, since there are a lot o

> But I'd like to hear from people hosting AdSense on their sites. Has profiling raised CTR rates significantly? Probably hard to tell, since there are a lot of confounding variables. Most notably, conversion across the board has plummeted in recent years (I forget the exact percent, but I think it's about one third). So if you're a website funded by ads and your traffic has grown 10% since last year, you've actually taken a pay cut!