I've been an AdSense publisher for many years now, and I don't know if it is just me, but my earnings are noticeably down since late-October.

I'm constantly adding new content, so it's sometimes hard to compare stats to previous years. But I can tell, my Clicks and eCPM have never been that low what it used to be... starting from late-October.

To me, it seems like Google did some tweaking.

Still, I'm making a good amount of money from AdSense. It's just the sudden, obvious drop that quite surprises me. I'm wondering if Google is moving more into CPA ads, which I guess would be better in the long run (more value clicks, advertisers would pay more per click, publishers & advertisers wouldn't need to worry about invalid clicks, publishers would pay more attention how to get the best results for the displayed ads and not just try to get the highest amount of clicks, etc.). In the end, I believe, it's the ROI that matters.

Anyways, it's quite obvious to me that there was some major update on Google's side in October. So, I'm hoping that as soon as advertisers see better results for their money, the eCPM will rise. I still believe in quality content and that the market place will decide the value of clicks.

I'm very curious if anyone else is experiencing this?