[activepeanut]

Another problem, post-university, is keeping a clean Facebook profile when all your new connections are professionals.

G+ solve this with circles, but I don't know anyone on G+, and it's too easy to make privacy mistakes on Facebook.

My Facebook profile is turning into my new Linkedin as I'm getting older.

[prawks]

Add to that family members, and you have pretty much the problem with Facebook currently (imo): focus.

Unfortunately, it's also the only thing Facebook pretty much seeks to avoid, in favor of making the most connections between users as possible.

[nitrogen]

You can still create friend lists in Facebook, but it's not nearly as easy as G+'s drag-and-drop circles UI.