Good advice.  As for the logic of f3 combined with O-O instead of the normal Yugoslav and O-O-O, true, it doesn't appear to be sensible, but I think people are using it to avoid playing into black's Dragon preparation.  White ends up with equality at best, but avoids the heavy duty theoretical stuff, plus, if he knows what he's doing, he can get a time advantage if black hasn't seen it much and has to work it out with the clock ticking...very important in blitz.   

When I first started to play the Dragon online last year, I hardly ever saw it...maybe once every 50 games in the open Sicilian.  Now it's once every 25 or so.

What is the name of the Classical Dragon variation where white plays Be2 or Bc4, coupled with an early f3 but he does not O-O-O?  White acts like he might play the Yugoslav by feinting with an early f3, but then castles kingside and delays Qd2 (or doesn’t play it at all).  I can’t find this structure in Dearing’s book or in “Winning With the Sicilian Dragon 2” by Chris Ward.  I also can’t find it in Nunn’s Chess Openings.   

It is showing up more frequently in my online games than it used to.  One of my 5-minute games today went like this:  Worthy opponent – Lost Highway 1.e4 c5 2.Nf3 d6 3.d4 cd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.O-O O-O 8.f3 Nc6 9.Be3 d5 10.Nxc6 bc6 11.ed5 Nxd5 12.Nxd5 cd5 13.c3 Rb8 14.Qd2 a5.  This looks ok for black, and I later won, but he should have drawn.   

I think Bc4/f3/O-O is stronger than the Be2/f3/O-O formation.  Sometimes black spends too much time and deploys too much material against the queenside where white’s king is not located, and then white plays f3-f4-f5.  The f3/O-O structure feels more solid for white than h3 and O-O because it inhibits the black tricks with Nxe4 etc. that show up in the h3 variation.  Does f3/O-O have a name?  Is there a known reliable way for black to deal with it?