artek - 6:45 pm on May 11, 2011 (gmt 0)
Regulators are examining whether Google unfairly manipulates its search results to favour its own services and rigs its advertising system to drive up prices.
I think it is more about AdWords. Did you notice trend in AdWords in the last six months:
impressions way up, CTR way up, conversion way down, it does not look natural to me.
It could be about CTR manipulation and about forcing websites to use paid ads by pushing their organic results below the fold.