I just had an interesting 5/5 blitz game on the White side of the Sicilian Dragon, an opening that I know some motifs of, but not the theory in any great depth. I've done some analysis on it, and want to submit that to the scrutiny of chess.com's membership. Hopefully, some more knowledgable Dragoneers can fill in some theory gaps that I have, or stronger players can point out where my ideas were right or wrong. There are some exchange sacrifices that I have some pretty strong opinions of that seem as if they'd be highly debatable, for example.

Here's the game:

All the moves played up to the tenth move are 'book'. Your opponent's tenth move was 'out of book' and a definite inaccuracy. While it looks alright superficially, all it actually does is offer you a free tempo to retreat your Bishop to b3 (which would normally be your eleventh move anyway after 10...Rc8). In the game, the critical error was just Black throwing away his Knight for two pawns. He would have had a better chance of defending successfully with 15...hxg4 16.h5 probably the best way to continue) Rxc3! (with the idea of tying down the White Queen to the defense of her King - White cannot continue his attack should he recapture with the Queen) 17. bxc3 Nxh5, etc. Obviously the position still favors White, but Black position looks to be far from hopeless. By the way, I'm no Dragon expert, so don't take my word for it -

your oponent's tenth move is played normally in the yugoslav attack, but i'm not too sure if it's played in whatever opening that is. 

 10. ... Ne5( after h5 this move makes sense because knight on e5 controls g4 and c4 two very important squares in dragon) and 11. ... Qa5 are totally acceptable moves altough i'd play 11. ...h5 myself. 15. ... Nfxg4 I've seen before played in blitz games - completely worthless in my opinion. I wouldn't put exclamation mark at 19.Rxg4 - completely normal move in this position - nothing deep behind it. 20. ...gxh5 obviously losing game.