Consider Flickr - it's a great tool for photographers. But it's not socially useful; all your non-photographer friends can't be tagged in photos. Can they solve that problem? Or can Last.FM? They already have events and a social graph, they just don't have a way to get the rest of people's activity. Basically no-one is going to join a social network that they don't think they can get their friends to sign up to.
Remember http://www.jwz.org/doc/groupware.html -
That got me a look like I had just sprouted a third head, but bear with me, because I think that it's not only crude but insightful. "How will this software get my users laid" should be on the minds of anyone writing social software (and these days, almost all software is social software).
Also, what about niche social networks? Linkedin seems to have conquered the professional social network. Facebook seems strongest in the friend category. To me it seems awkward having family and friends in the same Facebook network. Perhaps a niche family social network could succeed...
If Facebook hasn't managed to get people to adopt this, it seems hard to believe that anyone else will.
Now i think that maybe "lists" have bad orthogonality to what people want to do. They seem to make sense from a DB perspective, from inside the system, but they miss the point by so little that they actually cloud the issue. Weirdly enough.
My current guess is that it boils down to identity management. I would like not to classify friends, but to manage "personas", like masks or roles that i play. For example "student" or "employee" or, you know, "night life". It is more like a sub-profile than like a list of friends, though. This would obviously involve a list of friends, maybe it could only involve a list of friends, but still...
Definitely an area where more experiments would be needed.
Surely they can atleast guess for me (based on who I share friends with, when we became friends, whether we went to school or lived in the same city at the same time, etc.). If FB would give me a draft to review, then I'd try sorting through my friends.
If they don't, then I simply won't share many things that I might like to share, just because it has to be broadcast to everyone.
Because the act of 'defriending' someone has such strong negative social connotations, it will continue to be very uncommon, and as a result the number of friends any given user has is increasing monotonically. I've had Facebook for years, and by friend count has steadily increased and is now nearing 900. The users who only have 100 friends now will eventually be in the unmanageable and uncomfortable position of having 1000 friends, and by that point I won't be surprised if my count is approaching 1500.
Facebook certainly seems to want everyone to have as many friends as possible (note the friend suggestion features), so it's only a matter of time before everyone is presenting themselves to such a large auditorium.
Users can have multiple profiles for each of the groups they communicate with e.g. one for family, one for friends and one for colleagues.
The privacy settings are also very simple. Public or private. Only followers get access to private profiles so you don't have to worry about friends of friends seeing something you don't want them to.
Currently under heavy development but a beta is up at http://www.swytch.net for anyone who wants to have a look
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