doc_z - 3:28 pm on Apr 25, 2012 (gmt 0)
I have to wait at least one week until I'm sure that SERPs are stable. However, so far it looks fine.
There are probably more than one thing which was targeted within this update. However, one part of the update seems to target very fast and massive internal link structure changes. I guess this was one thing when they were saying:
We are trying to make GoogleBot smarter, make our relevance better, and we are also looking for those who abuse it, like too many keywords on a page, or exchange way too many links or go well beyond what you normally expect.
I have several hints which confirm this theory. Of course, to verify the theory I have to go a step back and see if the filter reappears. However, I'll not do that :-)