Lorel - 2:38 am on Mar 5, 2011 (gmt 0)
I manage about 50 client domains all following Google guidelines, all hand coded, load fast, all different sizes and clear focus , some ecommerce, some not, traffic varies from 11 to 12,000 visitors per week, some update weekly and some haven't been touched in years, none have RSS feeds, and none of them were affected by this update.
My site and one other are the only ones with Adsense on them but usually only 1 ad per page either in middle or bottom of the page. The sites I design are all squeeky clean, so clean in fact I've been considering adding some grayness just to keep up with the crowd. In fact the sites I design have never been affected by any update and I've been a designer for over 11 years. I rarely have much to add to these update discussions.