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1.
The person who sits in the crowd and feels the need to point out everything that is going on in the game very loudly to whoever he is sitting with. He or she usually has extensive knowledge of the sport at which they are attending, but feel the need to put this on display loudly and obnoxiously on every single play.
Guy 1: Never go to a game with Nick.

Guy 2: Why?

Guy 1: He's a crowdcaster. He was shouting out every play in excruciating detail. I was thinking 'Dude shut up; we all know he missed the ball. You don't have to explain how he should have done it!'

Guy 2: I hate crowdcasters. Anyone crowdcasting should be banned from sports!
by Tex-Mex Shawn C. September 28, 2010