A WebmasterWorld thread links to some comments left by a Googler at YCombinator.com named moultano. This Google warned of big changes coming to Google really soon. SEOs and Webmasters take this as a sign to be prepared for something major.

Moultano from Google said:

Another comments left by this Google read:

Now, I do not expect Google to be releasing a filter on AdSense publishers. It wouldn’t work too well, there are too many quality sites with AdSense. I do suspect the content farm algorithm to be released soon and possibly that is what this Googler is talking about.

But like Google knows, AdSense did not help reduce spam, it likely increased the spam out there. But in hindsight, banning the AdSense publishers won’t stop them, they will just look for other avenues to spam and make money.

In any event, be prepared for the next major Google change.

Forum discussion at WebmasterWorld.