gotmetoo - 12:40 pm on Mar 2, 2011 (gmt 0) [edited by: gotmetoo at 1:00 pm (utc) on Mar 2, 2011]
This is going to be interesting.
We run a moderately sized site (AdSense ads and all unique content). Had millions of visitors over the past few years and are a premium publisher... go figure, after this update - 50% traffic loss from Google organic.
Interestingly enough, we were never affected by any previous algorithm changes at all. This is first time in many years.
Even more entertaining was a reaction of our AdSense manager being rather puzzled by our recent stats...
I am very glad for Cult of Mac's reinstatement, but our site is still down 50%.
Moreover, at least four web sites featured on a well known Google AdSense Success Stories page are also hit hard and are listed in another well known list by Sistrix (Hometips, Teachnology, EzineArticles, Askthebuilder).
If I was guessing on the aim of this latest update, I would say Google is regretting the whole AdSense Publisher Network idea and is working toward gradually phasing it out. Otherwise, I see no reason, given Google's resources, for such a wide fallout.
[edited by: gotmetoo at 1:00 pm (utc) on Mar 2, 2011]