One of the big failures I think is for FB to not push friends lists more. The default is that you have 500 people on FB that you sort of know, and that you don'

One of the big failures I think is for FB to not push friends lists more. The default is that you have 500 people on FB that you sort of know, and that you don't reject people that add you but you barely meet. So you end up not feeling like you want to share anything because your supervisor is on there, which you're work-friends with, but not close enough to share just anything. For example, all my friends in their 20s will post pictures of them at various raves but none of them will post it on Facebook. Everyone knows half the people there are on ecstacy, which is fine for your friends to know, but perhaps not all of your colleagues. There's a great deal of limiting self-expression on FB, because it's become such a public place. You're left with people who keep very small facebook circles, which is a tiny minority of mostly inactive users, people with sizeable circles who keep quiet because things you're open about to your 20 closest people, you don't want to share with the other 480, and there's people with huge circles who are the most vocal and often extreme in opinions and things they share. Facebook has all the basic functionality to change this, moreso than instagram for example. You can put all your contacts in a limited-profile list, which reveals a profile picture, a handful of holiday pics and posts you explicitly set to public. And then you can put 20 friends in your close circle, which every picture and post is revealed to by default. This can be even more private and intimate than say instagram. But FB doesn't push it. So people end up having 1 privacy setting for everyone, accepting everyone on facebook, and rejecting most people on instagram. Most friends I know will rather accept 100 distant accounts (travel, food, lifestyle accounts of individuals abroad or companies) on instagram than accept a colleague that's 10 years older that you have lunch with everyday and are cool with, and have been facebook friends with since your first week at the company.