+YungJun Yang +Marie Almstrom +Pete Cashmore
Yung,jun, i get what you're saying, and am very interested in the privacy issues for no other reason than it seems to be a sore spot for everyone. The impression i took away - and i could be very wrong - is that 'circles" enables you to share with a small group of people rather than posting publicly on your wall. Ideally, you can post your drunken pics from vegas with your circle of frat brothers, but not your mom. But in the real world, all it takes is one of those frat bothers to share a pic - anywhere - and whatever privacy you imagined you had is over. all it takes is a print-screen key combo.
In +Pete Cashmore
addressed PB friends list info as being poor, and perhaps it is. I have in several private groups on FB - one is even listed as "secret", and you can't find it anywhere, nor can you forward posts from it. The beauty is these lists show up in my regular FB feed, but responding to them WON'T. Comments and responses will only show up in the lists. To me, this is better than what G+ is offering (and still not foolproof, mind you. drunken friends with print-screen buttons exist everywhere)
Having been a 14 year old girl at one point in my life, i know for an absolute fact that if you don't want anyone else to know something, don't tell anyone. Or only tell people you can trust. But never, ever write it in a note.