I'm not sure where and when Google will launch Google Circles:
But the presentation embedded in that post is a definite must-read. Version 1 was great:
School and work, friends and family, the sacred and the profane; we've always been able to communicate different things to different people in different circumstances. Facebook, Twitter and other online social networks have collapsed all those contexts into one big bucket. We speak to our "friends" all at once, no matter what we might want to say to one group of people or another. And thus we often feel less comfortable than we might saying anything at all.If this is an open question for you as well, go read the presentation right away!!