They're manipulating the algo to bring certain type informational pages up in the rankings. Wikipedia
Over the past month about every keyword search in my areas is moving in the direction below for the first 30-50 results. The concentration used to be only on two or three major keywords. The only sites breaking this trend are link buyers. So maybe this is why Google is now hunting those sites. You would think some of the these sites could stand on their own without Google giving them top rankings. It seems to me that Google is becoming more and more of an elitist search engine every day. Meanwhile they turn to small business to foot itís bills via Adwords.
Large Health Site
Another Large Health Site
They're manipulating the algo to bring certain type informational pages up in the rankings.