I don't think they are conscious, i.e. self-aware, at even a minimal level; it's a human conceit to imagine that such awareness is other than orthogonal to intelligence. And even as intelligence goes, I should have to think theirs, whatever there is of it, is akin to that of an ant colony, rather than anything more like we'd recognize as resembling our own selves - and even that is really something of a philosophical point.

In any case, I'm less interested in parsing details of precisely which speculative definitions of artificial intelligence Facebook taken as a whole might satisfy, than taking the view (if perhaps only for the sake of this argument) that it does certainly satisfy at least some definitions of life based on its behavior, in particular its evident tropisms toward growth and self-preservation, for which no particular intelligence is even necessary - kudzu need not be intelligent to be a pestilential and highly effective thief of the resources required for a proper ecology to thrive.