This is googles response to the bing/fb partnership.
I expect +1 to be a major flop just like buzz. Google is trying to be more social but will never get anywhere copying others without bringing anything new to the table. Just because you're google doesn't mean people will love everything you release. Buzz is an inferior product to twitter and +1 will always be inferior to like.
How many people really care what websites there friends like? My friends and family like totally different websites than I. If I really like a website and think it's worth sharing I will "like" it so they can actually see it.