I'm not the one to go into conspiracy mode, but it looks like Google is expanding its war on small business and I don't like where this is going.
I am a medium-sized publisher with approx 40k adsense views on any given day. But lately, I am observing massive manipulation in my account e.g. removing a lot of revenue from my account. Of course Google is quick to say it's invalid clicks, but I never had so much problems with invalid clicks in over 5 years and there is ZERO transparency. I understand that Google can't give away much info to avoid click fraud, but they need to start disclosing something. Are they testing a new anti fraud algorithm or what is going on?
Google's war on small business may just have started. They really put us small business owners through a lot last year .. and now this?
We have a number of items about invalid activity going right now - it would probably be a good idea to read through those first.
Whenever people talk about Google declaring war on small business, they tend to forget that when someone falls, another one rises. I have a small business with AdSense and Affiliate sites, and I've done better every year since I started.
Anything regarding search results actually should probably go the Google SEO forum, and there's also a forum for Google Business if you want to talk about their business practices.