In late 2009, Google decided to tighten up their rules on who they allow to use Google AdWords and increased the rate of suspending AdWords accounts. In reality, those suspensions began earlier in September and November 2009 after announcing the crack down on advertisers.
Since early 2010, we really didn't hear complaints of mass banning. Of course, I've seen individual complaints here and there.
A WebmasterWorld thread has a six-plus year old AdWords veteran claiming three of his client accounts were banned this week alone. He asked if there is a new increase of account suspensions within AdWords, like we have seen in 2009?
I am not sure. I see some complaints in the Google AdWords Help forums, but not at the levels of mass suspensions, unless it is really new and most advertisers did not notice yet?
Are you seeing mass AdWords suspensions?
Forum discussion at WebmasterWorld.