I've hit the big-time (lol) suddenly, getting almost 100 hits per day (laughable to some of you, i know, but bear with me...). Unfortunately, at about the same time, my Google Ads went out, displaying only PSAs! I'm pretty sure it's a problem with my main site, as my other channels are still working and displaying targeted ads! I thought it was a cursing problem, so I went through and got rid of all the cursing... to no avail. Recently I've just tried changing to a new ad size and then changing back, as suggested on this board - hoping that will work. www.jimtopia.com is my main channel where PSAs are displayed only. www.cupolastandard.com is my other channel which still displays targeted ads.
My guess is that G doesn't have a clue what the page is about (I don't). The second site clearly has a lot about one topic (bush), but the first is more like a mish-mash of words sprinkled about, with no clear topic. Perhaps one permanent post at the top that gives G some direction as to what the site is about...
I agree with Donna - also something else to add, I read recently that if in the forum you have the moderator names, it can block Google, and then show PSA's. I've got the same problem on mine which I need to sort out.
I'd agree with you there donna, but I've never had any problems with PSAs before a few days ago - it's always been able to derive some targeted content.