Unfortunately, Google just doesn't know enough about my social graph to make this much more than a noisy list of strangers and site owners trying to game the sy

Unfortunately, Google just doesn't know enough about my social graph to make this much more than a noisy list of strangers and site owners trying to game the system. They say they "may" "soon" incorporate your connections on sites "like" Twitter which would be an improvement but from the language it sounds like they haven't even talked to Twitter about it yet. Of course they don't mention Facebook, who do know my social graph and are busy collecting Likes around the web that they can use to build a robust, trustworthy recommendations product. It's going to be hard for Google to build the assets they need to avoid ceding part of the search market to Facebook.