hi aya72, it's a private by default, if you don't share the resource (photo, album, think) to friend, friends or close friends, they will NOT know it is there.

hi aya72, it's a private by default, if you don't share the resource (photo, album, think) to friend, friends or close friends, they will NOT know it is there. yes, you could host social network in your own server message is encrypted. There's api to connect to this social network from another application. But it's not public yet.