I don't see it as a bad line. If they exchange rook and bishop, black is probably in minimalistic advantage, so white should check first and avoid early trades. But he's still in trouble.
Being bad is probably not the reason you don't see it played. Previous move of 2.Bc4 by white is. Its just a bad move. 2....e6 and 2....Nc6 are more logical and both are proven to be successful against it, so people stick with them.
@fawe: You totally just mixed up rook (R) and Knight (N) - the Knight is the horsey thing.
Bb5+ wins a Knight for a pawn.
Sry, yea ment Knight intead of Rook. I'm just not 100% with English names.
I don't think that Bb5+ wins a Knight.
Its 4. Bb5+....Bd7 they are both hanging again.
I like white's position after 4 exf6 dxc4 5 fxe7 Bxe7 6 Nc3.
Heres a line in aganst the bowlder attack in the sicilian defense I found to be intresting can someone tell me if its a good line or can it be easily refuted. In my database from Fritz and Rybka only 6 games were found so it's hard to learn more about it.