WTF is Catfish???

Only a vague premise of the movie is allowed to be given up and any other details of the flick are considered to be huge spoilers. So I don't want to read into it too much and ruin a movie I've been obsessing about since I read a review in a local newspaper last week. It comes out today, and I'm considering seeing it alone because I dont have the patience to beg anyone to see it with me.

*** UPDATE

Catfish is deceiving. and the build up is not justified in the end.