[plusquamperfekt]

- Google plus: that would be kind of pointless, wouldn't it?

- LinkedIn: The worst of the worst ... :D

- HN / Reddit / Twitter: How do you share pictures privately with friends? (to name one necessary feature)

[schwap]

You could have a private subreddit I guess? Still super clumsy compared to FB.

Further, HN/Reddit/Twitter etc. each only have a subset of my friends. ALL of my friends are on FB.

[rodgerd]

> How do you share pictures privately with friends?

Flickr. Some of the holes in the group management are a weakness there (no albums in Groups, for example).