I've been using the adsense preview tool to try and weed out some MFA sites on my health site (if you haven't done this yet you need to). I've come across a lot of sites like: truthaboutabs.com which have you fill out a form and they email you information about how you can give them money. do you guys block ads from these sites? i've come accross a bunch of mfa sites that make it too obvious they're only paying pennies a click, but with these ebook sites it's hard to tell. also, if you want the list i've made of mfa/ebook/crappy sites let me know and i'll send it to you. -ken
e-books are all garbage, would you ever buy one? I wouldn't display any ads with only e-book sales, they probably don't pay much per click
in my health related site i weed out the ebook / opt in e-mail sites, they cannot afford to pay more than maybe 2 or 3 cents a click.