Aoe2913 - 10:59 pm on Apr 25, 2012 (gmt 0)
So I had two sites with spun text backlink profile one got hit one didn't. Interestingly, the one with the the higher ratio of blatant hard core backlink spun text spam moved up a lot in this "SPAM" update. Regardless, there is clearly something more to this update. Again, think along the lines of helping or hurting Google's bottom line because they wouldn't hurt it with any update.
Also, make sure to not put products in your site that compete with Google's bottom line or challenge their search supremacy, they clearly don't like that. I was kind of amazed at the speed at which this can happen actually in a recent test with a competitors product. I guess it shows some sort of recent desperation.
The exact keyword backlink profile, across a multiple URLS in the footer got hit.
The Results seriously just look like Adwords results with the most competitive terms just being filled with major Adwords buyers. Let's just call it what it is Adwords Search.