Google Aggregates Movie Reviews?

Searching for a film diary kept by Penn Jillette while he was making the documentary The Aristocrats, I stumbled across this page of reviews on Google.

It's similar to Rotten Tomatoes but less cluttered. I guess the feature has been around since February. I knew they were incorporating seaches for movie showtimes, but I certainly didn't know they were doing this.

Note the disclaimer at the bottom:

No movie critics were harmed or even used in the making of this page.