You should have linked your sources here, rather than just borrowing what they had to say. You owed the reader a way to learn more, not only to appreciate the synthesis you put together.

Events have shown, as you were writing, that political professionals now also appreciate. as only the crazy alarmists did until very recently, the effect of commercial data-mining on electoral democracy, which is just another form of product marketing.

Where you could have gone past your sources on the basis of what we have been discussing in this course:

1. You could have explained how federated or decentralized social networking would result in the reconstruction of more "local" communities for political conversation, without the automated surveillance that is the blowback of centralizing the Web in the Facebook/Twitter style; and
2. You could have discussed the First Amendment case for government's accepting (for reasons of protecting democracy, among others) a positive obligation to assist people in speaking on the Web in unmonitored and un-mined fashion.