I tried putting section ignore tags around anything that had to do with donating at http://www.killmymac.com so I would get more computer relevant ads, but now it's not showing any ads. If no ads were found, I had it be filled with just a white space, and that's all that's showing. What could the problem be? EDIT : I took off all the tags, removed all the "donate" keywords, and I'm still getting a blank space where the ads should be.
I had that yesterday as well. I waited a couple of hours, reloaded my site, and everything worked just fine. How long have you waited?
I would definitely remove the tags. You must de-emphasize the keyword 'donate' on your site, that's all. It's appearing way too frequently.
You might have a problem with your URL. The word "kill" is in it. But I'm not sure of this. Just throwing it out there.
Hey, one of my sites is like that. No ads showing at all. They disappeared last night. Until now, still no ads showing. I don't know if there's something wrong with Adsense or they disabled the ads on that site. Gotta wait 'til Monday for a reply from them, I think. :/