Those Who Remember the Past Are Pleased to Repeat It

White has an obligation to punish opening mistakes, again and again. And again.

Wall,B - Guest1305432
PlayChess.com, 2014

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.f4 Nf6 

Oh, yes, this is what we in the Jerome Gambit Gemeinde call "A Gimme". Remember it.

8.Qxe5+ Kf7 9.Qxc5 Nxe4 

Better, but not successful, was 9...Qe8: 10.Nc3 Nxe4 11.Qh5+ g6 12.Qd5+ Kf8 13.Nxe4 Qe7 14.0-0 c6 15.Qd4 Rg8 16.f5 c5 17.fxg6+ Ke8 18.gxh7 cxd4 19.hxg8Q+ Black resigned, Wall,B - IanJoshua, Chess.com, 2010.

10.Qd5+ 

Here Black resigned in Wall, Bill - Meinherr, Chess.com, 2010. 

10...Kf8 11.Qxe4 Qh4+

Also seen: 11...d5 12.Qd4 Qe7+ 13.Kf2 Bg4 14.Qxd5 Qe2+ 15.Kg3 h5 16.h4 Re8 17.Nc3 Qa6 18.d3 Qg6 19.Bd2 Be6+ 20.Qg5 Black resigned, Wall,B - Dani, Chess.com, 2010.

12.g3 Qg4 13.b3 c6 14.Ba3+ Kf7 15.Qe7+ Kg6 16.Qd6+ Kf7 17.Nc3 Re8+ 18.Kf2 b5 19.Rae1 Re6 20.Rxe6 Qxe6 21.Qf8+ Kg6 22.g4 Qf6 23.Qe8+ Qf7 24.f5+ Black resigned

A Gimme

One nice thing about the Jerome Gambit is that your opponent can make what at first quick glance might appear to be a reasonable move - and wind up giving the game to you.

Whether you consider the following game a "gift" or a "grab", it seems to be win number 201 for Bill Wall in The Database.  

Wall,B - Guest876397
playchess.com, 2013

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.f4 Nf6? 

Develop  a third piece, attack the Queen. What's the problem?

8.Qxe5+ Kf7 9.Qxc5 Nxe4?

Making things even worse.

10.Qd5+ 

Here Black, about to be down a piece and a pawn, resigned in Wall, B - Meinherr, Chess.com, 2010

10...Kf8 11.Qxe4 Qh4+

Or 11...d5 as in Wall, B - Dani, Chess.com,  2010 (1-0, 20).

12.g3 Qg4 

13.b3 c6 14.Ba3+ Kf7

Threatening ...Re8

15.Qe7+ Kg6

Already: 15...Kg8?? 16.Qf8 checkmate

16.Qd6+ Kf7 17.Nc3 Re8+ 18.Kf2 b5 

 19.Rae1 Re6 20.Rxe6 Qxe6 21.Qf8+ Kg6 22.g4 

Threatening 23.f5

22...Qf6  23.Qe8+ Qf7

Or 23...Kh6 24.Qh5 checkmate

24.f5+ Black resigned

Black loses his Queen with 24...Kh6 or 24...Kg5; or falls to 24...Kf6 Ne4 checkmate.

I tell ya, I don't get no respect...

The Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) is the Rodney Dangerfield of chess, always ready to complain "I tell ya, I don't get no respect."
In the following game, Black defends in the opening as if any old move would do. It's not surprising that he ends up on the wrong end of a miniature.

Wall,B - Dani
Chess.com, 2010

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6

7.f4 Nf6

If your opponent attacks your piece, don't move it away; attack something more valuable of his. (To be fair to Dani, Black has scored a surprising 43% with this move in The Database.)

8.Qxe5+ Kf7 9.Qxc5

White has recovered his two sacrificed pieces, but his opponent sees a chance to grab back a pawn.

9...Nxe4 10.Qd5+

Here Black resigned in Wall - Meinherr, Chess.com, 2010.

10...Kf8 11.Qxe4

11...d5

So far the game has followed the early gobo-breaker, ChessWorld Jerome Gambit Thematic, 2005, where, after four more moves, both players timed out, for a double forfeit.

12.Qd4 Qe7+ 13.Kf2 Bg4 14.Qxd5

This "pawn grab", on the other hand, allows only a harmless "attack" on White's King.

14...Qe2+ 15.Kg3 h5 16.h4 Re8 17.Nc3 Qa6 18.d3 Qg6 19.Bd2 Be6+

One last try.

20.Qg5 Black resigned

Exchanging Queens simply leaves Black a piece down, with worse development.