I think it wouldn't work, simply because they need network effect to work and not enough people see any monetary value in that kind of service (fb, twitter, sna

I think it wouldn't work, simply because they need network effect to work and not enough people see any monetary value in that kind of service (fb, twitter, snap) (although many are kind of addicted to it -> they are not deleting their facebook account and use it a lot of time, but if it was paid they wouldn't have used it in the first place)