tristanperry - 9:08 am on Feb 25, 2011 (gmt 0) [edited by: tristanperry at 9:09 am (utc) on Feb 25, 2011]
A site I've been working on on-and-off since August '10 is an AdSense site with [very] good content but it isn't too big (~60 pages of content, mid-thousands monthly uniques). It's monitised by AdSense and nothing else, and hasn't been hit. In-fact it's seen a ~35% rise in traffic in the past day or two.
So I don't think this is going after sites or pages with AdSense specifically. Personally I think it is mainly looking at the text and overall 'feel' of the site, in determining what's low quality and what's high quality.
And as we've seen from the Feb 2011 thread, Google might have got it wrong in some cases since *some* low quality sites are rising whilst *some* high quality sites are falling.
So it'll probably be tweaked a bunch, but I wouldn't say this is an anti-AdSense algo update. Or if it is, there's many more factors to it than that since my AdSense site is being rewarded (it would seem).
[edited by: tristanperry at 9:09 am (utc) on Feb 25, 2011]