I found out about <!--google_ad_section--> today and I was wondering how important it is and how many people use it?
I use it on one site, helped to get rid of some random and totally unrelated ads. Didn't help the abysmal revenue though.
I've been testing it out on my blog, it has worked minimally, but like what DLGx said, it hasn't helped the bottom line.
Google send me the optimization tip about google ad section filter ads to simply filter ads non relevant Do they know their ads are not matching ?