Has anyone noticed these past two days that ads will not show for their sites? I have 3 text ads and one link unit. None of them show up except for one public service ad. And then once in a while they'll show up and then disappear. I have had these ads running for a month and this is the first time it's happening. Any ideas? I know it happens if there's no relevant ads to run but this is a big niche so there are always relevant ads for google to show. I have other urls and pages and all the ads show up.
I am not sure about the reason.. never happened to me till now Do you have a lot of invalid impressions or clicks?
I have read that it's not good to have a 10% or more CTR. And I have had that a few times by pure luck. But it was all legit otherwise my account would be suspended. As for impressions I do refresh my page a lot to update the counter and see how many people visited but I don't think that could be the problem. This situation is weird. The ads come and go on and off as they please. So it's not like the ads were removed forever. Not sure what it could be.