Please can someone advise me why this isn't a/the line, and why the other is better than this one, in the Icelandic Gambit.

(I'm going through Fritz 11 openings book)

 

Here's the main line:

 

 

 

 

 

 

 

And here's what I play:

 

Uh sorry, I made the first 1 as a puzzle by mistake.

They seem to be equal.  The 2012 ChessBase Mega Database has 6...Bxd2+ played 107 times.  The move 6...Qe7 has been played 163 times.  Both seem to have the same win-loss-draw ratio.  The strong chess engines seem to give it equal status, perhaps a more slight favorite for 6...Bxd2 to equalize.

5.d3 is much better than 5.d4

Perhaps but the d3 pawn becomes a weak and backwards after Nc6. Black should get a good game from this.

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 I never had "a good game" with Black when my opponent played 5.d3.  Never !! It's the reason I stopped with playing the Icelandic Gambit.

I've had a couple. Just keep applying pressure. 

If you play agaisnt me this opening, I play 3. d4 it's better than 3.c4 no? I don't want a pawn, i want the iniciative when I play this.

I once was interested in the icelandic gambit and "played" it for months. Zero people accepted the gambit and i got no interestning games. Anyone else had experiences like this?

i get a few games.

As someone else pointed out, 5.Nf3 is what you will be encountering when playing experienced players. I'd bail on this gambit if I were you, it's not going to hold up for you in the long run. 3..c6 is much more solid and will transpose most likely to the Panov Botvinnik attack after 4.d4 cxd5. Knowing how to play against the Panov attack can be very helpful to further chess development for you. The Icelandic gambit is a dead end.

I like the idea of getting into those sorts of positions.