There was a problem yesterday evening with Akamai content delivery network and some Google stuff was affected. It was really bad at one stage with the Adsense control panel timing out and adverts taking about ten seconds to load. The problem was resolved after a few hours though. It may have affected earnings and traffic.
I have no idea what's going on with AS, but it's not doing well for me. Last I checked, AS was the only advertiser on my site that is down YTD. Traffic is up, I have lots of new original content pages online, and the others are all doing well, AS is the sole exception.
I've tried blocking inappropriate ads. No difference. I've blocked one advertiser who has targeted my site, because some of their ads don't really seem to fit my site. No difference, if anything worse. So, I took them off the block list.
I've changed ad colors. Changed from text only to image/text, back to text only. Nothing has made much of a difference.
And because AS isn't performing well, and hasn't been performing well, I keep giving it less impressions, in the hope that the ads that do show will be better paying since there aren't as many impressions. I've also shut down channels that haven't performed as well in the past by giving them no impressions, as I read that sometimes can impact other channels.
In reality, I don't know what's wrong. Is it interest based? Is it the new image only ad networks in the AS system? I haven't got a clue. I just know that AS is the only advertiser running down fiscal YTD, with a little over two months to go, so that tells me the problem lies more with Google than with my site or its visitors.
I've read where it's best to let Google decide which ads show on your site, so that's what I'm doing for now. I'm going to try to resist fiddling with settings for a few weeks to see if it makes any difference.
Something's definitely up... though it sure isn't my revs. The past 3-4 days have been shown awful CPMs but Impressions have been up 60-80%. I was making more $ with lower Impressions but a higher CPM. It's frustrating because the first half of the month was looking really good.
Another oddity is that the very high Impression totals aren't being reflected in Analytics - those are around normal. Where are these thousands of extra "mystery visitors" (who don't click on Adsense ads) coming from and why isn't Analytics picking them up?