I could imagine allowing users to opt into certain kinds of campaigns -- an "I'm interested in: [] Internet freedom [] Reproductive rights [] African warlords," or alternatively allow certain organizations / sponsors to control usage: "I'm open to issues promoted by: [] ACLU [] EFF [] NRA"
This is a potentially huge idea. Allowing users to create and choose topics of activism they care about, and voluntarily sign up for email alerts, provide ways to promote their topics, etc. - this could be something people really want.
Not really new - facebook has causes, I'm sure every other social platform has something alike. The problem is that most people don't care enough for most issues interest groups promote. SOPA was an exception because it was exceptionally bad idea. However as soon as it turns from exception to politics as usual, it would get the same amount of attention politics usually gets. No less, but also no more. Whoever is politically active/involved already gets such kinds of alerts from the sources he is affiliated with. Whoever is not, won't read them except in, well, exceptional cases.
