Google has an interesting new tool in beta (see USAToday article, plus the Google Blog post), called +1 buttons, and here’s my video on that (click here). This is of great interest if you have a lot of friends in the Google network or you have a local business that could use some support from your friends network. In the future they may get access to a wider set of your social network contacts, via Facebook, et al. It’s a sort of friend recommendation overlay of web search.
That is sort of intriguing, because Google searches themselves are a sort of recommendation engine of complete strangers. If a business or service has an additional wave of positive strokes from people that you actually know, it could make a search result quite a bit more fascinating.