I don't. I really don't know anyone; some think "not so good", some "just average", but no one who said "Crap".
People went to see it several times, and Marketing can't achieve that.
And, if Marketing can do that, why don't they do it every year? Marketing is powerful, but not so much.
CGI average? for god's sake, CGI was awesome. One of the most impressive works I've seen in my life (most impressive is still Jurassic Park).
3D Pathetic? What do you wanted? stupid stuff jumping to the audience every 3 minutes like some kind of theme park attraction? Resident Evil 4 does that, and the trailers already look ridiculous.
You know, even Bay praised it LoL
And studios really have to make lots of fake accounts, because it has high rates in every website where movies can be rated. Even the Spanish ones (with reviews written in perfect Spanish). I suppose that users of music/sports/off-topic boards with thousands of messages who also praised it where also studio employees. Maybe my friends and family are too.
And why didn't the employees of other studios voted against Avatar? You know, with their own thousands of fake accounts.
People liked Avatar, just assume it.