I have tried this gambit out in two games so far, and besides the on-going one at the moment, I was thouroughly crushed. Do you think there is any sense to these moves? It looks somewhat dubious to me.
Latvian Gambit

If you're going to play the Latvian play it Live or OTB. Realize you are investing material for Force and will have to invest more as the game progresses. If you hunker down when behind this opening is not for you. Study tactics or you will go badly wrong. It can be fun but also demanding. There are easier gambits to play with. Try
1. e4 e5 2. Nf3 Nc6 3. Bb4 f5 still messy and tactical but a little sounder.

the latvian is played fairly often by corrospondence players. It's to scary to play over the board. there are just to many tactics and imbalances to figure out.
I've played it a couple of times and you are losing until you win.

I disagree with the notion that because white has played the "extra" Nf3 against a King's Gambit that he therefore is better. Since generally black does not play Nf6 against the King's Gambit, this reasoning is too simple.
The argument would make more sense if black tried f5 against the bishop's opening.
1.e4 e5 2.Bc4 f5

The disadvantage of the extra move Nf3 is that exf5 is answered by e4.
The disadvantage of Bc4 is that exf5 is answered by d5. If black played 1.e4 e5 2.Bc5 f5, white should probably go for a reversed King's Gambit declined (which I'm sure is fine with white)
I think that the Latvian is better not to be compared with the King's Gambit - it is it's own opening. The common maneuver Nf3-Nxe5-Nc4 just doesn't occur in the KG. For this reason, it is best to not try to compare the opening with others - just look at this one, learn its intricacies, themes, and common positions.

Here is a game I won playing board 2 in a scholastic championship. It was the last round. The girl knew the opening but took about it the wrong way.

I added a 13,000 pgn database for this opening in the download area.
http://www.chess.com/download/view/latvian-gambit-13k-games
Boog.
I was looking up a few new openings the other day when I came across a strange-looking gambit:
Here is an analysis of the various third moves taken from Wikipedia: