Whitey - 5:20 am on Mar 21, 2012 (gmt 0)
more like 4% to 5% of queries. But it's all guesswork right now anyway.
That's potentially 17% cumulative of queries with Panda. The problem for some is it's a lot stronger is some vertical segments and money producing sites, built for income, which tend to be more aggressive in their SEO.
I'd ramp that up a bit in those segments. Prepare for some noise and anguish, followed by a long period of analysis. Hopefully it will be easier to figure out, even though it may prove difficult to adjust to for some.