bxf7+ in the Evan's Gambit - Amazing sacrificial attack or blunder?

I just played this on Yahoo chess against a friend. 7 minute/7 second increments.

I looked in the Game Explorer here on chess.com: http://www.chess.com/explorer/index.html?id=59673&ply=16&black=0

I was very surprised to find out we had played grandmaster chess up until move 8. I had no idea there was such a thing as the Evan's Gambit - I assumed my pawn sacrifice on b4 was no longer a standard line.

On move 9 in my game, I played bxf7+. Is this move a mistake? According to the Chess.com database, it was only played in one game. Grandmasters usually choose qb3 or qxd8. How are these better moves than bxf7+?

I only found one game where bxf7+ was played: http://www.chess.com/games/view.html?id=144868

White won quickly.

It appears to me that no matter what black does, his position is clearly losing. If he doesn't take the bishop his position is losing. When I then offer the knight, if it he takes it he's simply down a queen for two minor pieces - losing. If he doesn't take it, he just loses.

Any input is appreciated.

lol listen to ilovegambits... he knows what he's talking about.

ilovegambits pwnd me badly in live chess lol