[matt4077]

It would seem that Facebook is rather well-positioned to identify such problems in the data.

They could, for example, only count votes by long-term users. They also have almost complete knowledge of their users' political leanings, making it possible to counteract any attempts at manipulation.

[pixl97]

Eh, if FB doesn't release those algorithms to an independent 3rd party, one I'd to assume that the manipulation is on FB's part.