Really well made. I didn't like it much.
There might be an interesting movie to be made about Facebook someday. Its certainly emblematic enough of social and societal change in response to technology that its worthy of some amount of attention. But to put it plainly, tremendous direction, acting, writing, editing, and scoring, just aren't enough to get me to care about the personal and professional conflicts between a bunch of elitist billionaires.
The film is worth seeing for how well it is executed technically. The direction is interesting, the acting is strong, and the score is suitably moody. Really, if you can get over the face that the central conflict of the film is amongst a bunch of explicitly elitist Harvard students, than this might be the film of the year. I couldn't, so the film fell flat for me.