There are dozens of threads at both Google AdSense Help and WebmasterWorld forums with publishers complaining about their CTR (click through rate) declining significantly in the past week or so. Some are saying this is having a huge impact on their earnings.

Here is what one publisher had to say:

Here is another:

Now, we always see complaints about CTR in the forums, but the complaints and pretty large now.

Personally, my CTR is up. Not that I do much with AdSense, but here is my charge, with a red line showing the trend:

Like I said, we’ve covered complaints in the past but something is unusual about the number of complaints we are seeing now.

RazorMax from the AdSense forums posted his opinion on what is going on over here.

Forum discussion at Google AdSense Help and WebmasterWorld.