Coming at the heels of the Little White Butterflies scandal, the story of Google kicking Baka-Updates off AdSense (via) is certain to raise a few eyebrows. However, I should note that Google policies for AdSense always were stacked in Google favour and deeply unfair to users of AdSense. It is absolutely nothing new to be kicked off and banned forever for no reason and with no explanation, let alone a due process. Google know that you cannot sue them, unless you're a big international company or a D.C. lawer. So, Baka-Updates is just as likely not to be a victim of anti-manga purge.
Although I am not in any way financially involved at present, I am keeping an eye at alternative advertisement providers, such as Blogads, Project Wonderful, etc. One good way to know what trends is to keep an eye at the top representatives of groups who the Google establishment hates, like gun rights activists and jihad exposers. Perhaps we should add scanlators to the pool now.