[ajamesm]

I don't think anyone's in dispute as to whether they have the right to "tweak their product" (tweak, censor, curate, take your pick).

But is it a good move to tweak like that? Facebook IS a news site (see: news articles in the right-hand bar), and in fact they're just coming off of allegations that they tweaked news stories to fit their corporate political biases.

If those users start to feel like The Man is out to shape their opinion, and they limit their sharing and participating in response, then Facebook's capability to monetize those users will diminish.