i don't know that we know, at least the then current leadership at goglth, it was well understood. i remember they had kind of been like, maybe that's a little too overreaching. And zuckerberg never meant that any friction. He was not in favor of removing and who cares if people's privacy gets compromised? Whatever! You want to add somebody to a group, go ahead and ad em. Ndi also remembers buzz, google buzz was so well done when it was integrated into your gmal because it instantly knew your social networkbecause you were emaling with people.