I agree, but also I don't. If someone that to me is just an acquaintance drops me into his 'stalking' or 'spamming' group and I keep getting crap I don't want it. Additionally, if someone drops me into his friends group I think I have the right to meet other friends, like if I was invited to a party. So neither get the groups right. Nobody belongs to a group, it is about interests and stuff that matters. For instance, I have friends that like topics about politics and I woudl like to share these only with them, regardless if they are friends, coworkers or family, or other friends that like tech topics, and again, I would like to share with them. Some friends like politics and tech, so they could belong to both groups. The mistake of the FP and Google+ approach is trying to tag a person as a category, when these sites are about sharing different types of information and topics, regardless of the relationship you have with them.