As a large publisher, we have witnessed both the $10,000 and $5,000 thresholds. It's simply true. We are now using other networks and directly working with advertisers, and our AdSense revenue is $4,500 (total ad revenue is $25,000+/mo). We also quite presciently considered making a PR stink after the first AdSense ban (we were re-instated later), but decided this could tarnish the image of our company and of our product for our clients- AdSense revenue was not important enough.

Even though after the initial ban (when we overshot $10,000/mo) we were OK'ed by a contact in their Policy Team and re-instated (a contact we found after a lot of work), EVERY time when we bounced back to $10,000 and then to $5,000 after scaling down, we would have new vague and inane threats from AdSense about our perfectly NORMAL UGC ,as if the initial conversation with their Policy has never taken place.

We basically migrated away from AdSense, but if their are ANY SERIOUS LAWYERS here interested in a class action, we have a WEALTH of DETAILED documentation. ANAL, but it's definitely interesting: we have never encountered such a SHITTY treatment by any other company, and we have about 1,500 corporate clients. Once again, we never did anything shady or different than some other publishers that are apparently Green-listed by Google.