Scotch game analysis
Yes the Mieses variation, also correct although i prefer 4Bc5

Qh4 is definitely playable, but I'd say Bc5 is the most popular move and it's also the move that made me give up playing the scotch...and subsequently stopped me from switching to 1.e4!

I play the scotch a fair amount and Bc5 is definitely my least favorite move to play against... in my experience Bc5 is best
opinions, everybody has em and... well you know the rest.

4.Nxd4 is not in main line, although lots of low rated folks play it. Black players should choose between 4... Nf6 or 4... Bc5.
Qh4 is called the Steinitz Variation, but it is very rare. In the mainline white sacrifices a pawn for development.
I personally prefer Bc5, since this bishop becames very powerful in this diagonal.
I don`t think 7.e5 was a good move. You should develop a piece instead (like 7.Be2 in order to castle).

Buy IM Andrew Martin's Foxy Openings dvd on the Scotch Game. After watching this video, I will never play 1... e5 again.

The great thing about the Scotch Game is that it's so forcing and that if the other guy doesn't come prepared, then White will gain a decisive advantage early on in the beginning.
Sure, you could say that that's for every opening, but Scotch is special in the way that not many people know how to play it so they'll probably have time trouble later on in the game.
Here's a game I played starting out with the Scotch game, a personal favourite. In the scotch game, every move I make ( as white ) makes me feel like I force black to play a certain move, because if he doesn't, I'll win some pieces. By knowing what moves he has to do, and by forcing him to do so, the scotch game let's the rythem beat to your liking.
Here's a sample game between two 1350 or something.
Sure, black could of played much better in this game, but I think that this shows how effective the Scotch game can be. It pretty much forces the opponent to follow strict moves for the first 6 or so moves in order to not fall behind later on. Black is forced to play white's gameplan.
PS: If anyone sees a MAJOR flaw in blacks gameplay, please post... but be reasonable, these were just 1350s playing so, no Kasparov-depth analysis needed. Just want to make sure that I didn't miss something big.