I like this and posted a question yesterday on HN whether Twitter had such a UI. So I guess they don't. The deeper issue IMO is that a) we're trying to squeeze

I like this and posted a question yesterday on HN whether Twitter had such a UI. So I guess they don't. The deeper issue IMO is that a) we're trying to squeeze every last ounce of value out of the dying "feature" that "anyone can join this service for zero effort", and b) the services that do leverage a web of trust (in the social sense) like Facebook have business models that tend to damage those social links rather than build something healthy with them.