[visava]

A good social network needs to build real life grouping like school friends, office colleagues, relatives, family etc. Sharing of photos, updates and read permissions by group needs to be built in. But the big question is can they compete at this time with FB. How many people will switch just for this reason.

[chopsueyar]

...and acquaintances, enemies, people you're mad at, ex-whatevers, businesses you refuse to do business with.

And then when we start to admin all these relationships online, we will realize, "Why don't I just do this in-real-life?"

[dodo53]

also would be nice to have overlapping tags instead of discrete lists. You could have your startup people / people interested in ${tech} / people you'd invite to your birthday / people you'd share photos with.

Also, one thing I find annoying in Facebook newsfeed noise is for multilingual friends getting their non-English updates. Language groupings would be nice (or auto-tagging based on language detection (or autotranslations)).

[nextparadigms]

I like the tag idea. You could more easily group people under tags compared to lists, and when you'd post something you would just click on a few tags. It would at least be better than what they have now.