Losing the bishop on purpose for no gain?

I guess he does it because he can get away with it.
Once his opponents start beating him every time he'll probably stop.
I guess he does it because he can get away with it.
Once his opponents start beating him every time he'll probably stop.
I dont understand why people do it?
this guy did it twice during each game I played him.
Is it just so I move my king so the castle option is gone?
http://live.chess.com/live?v=2014121901#g=1013894953