Lanier proposes that Twitter (or analogous publishing platforms) should enable or require writers to form groups under which they public -- so that they share a reputation and have incentive to police the behavior of their members, analogous to some financial co-ops. This is an intriguing proposal, but it's unclear to me whether this discards some of the more attractive features of Twitter or how it helps Twitter the corporation. However, I do think that it identifies one of the big problems with Twitter (lack of structure, ease of trolling/harassment), which could contribute to its eventual downfall.