[yangtheman]

Private social network seems almost oxymoron. To create large social network, a company has to tap into user's vast social network and try to get the user's friends/contacts to join in as well. And then to increase engagement or stickiness, you have to keep reminding them to come back. Otherwise, the social network company might not grow as fast as founders/investors would like and also most likely affect revenue.... It's a tough place to be, really. I don't condone their action. At the minimum, they should've gotten user's permission first.