Don't know if this has been posted already, but if you guys don't know...If you want to boost your Adsense Click Through Rate with your blog, put your Adsense ad in the MIDDLE of your post, and let the text wrap around it. The key is to make the user forget there is an ad there. Adsense doesn't let you do this by default. Be careful that you don't get too much of a spike in traffic because Adsense will ban you. You have to take the adsense code and place it somewhere specifically in your HTML code, google the technique for this, you can find it easily.