Umm, I think this exchange was a bit unnecessary. Gerbarts was asking quite relevant questions in a Be2 nadjorf thread. 
                   Think most of us here would like titled players to reveal their last ideas in their favorite openings, but meanwhile these players have their own games to win...

Bye John S

I don't want to offend you, but your approach is very superficial: blitz games, too lazy to read books, depending on the experience of others .... This is probably the answer to Kylemeister's question too.
So here is my superficial answer:
Black organizes counterplay on the queen's wing (a6, b5). He is always on the lookout for a central bread (d5, e5) but must avoid to get mated.
White organizes either a pawn storm or tries to break through in the centre (e4-e5). That's why he castles queenside.
For blitz this is all you need. Don't blame me though if you get lost positions within 20 moves.
Imo superficial debates don't need more than 5 posts. Gerbarts may answer and then the thread may be closed. 

I continue to wonder why these "what are the ideas in opening X"-type questions seem almost obligatorily tied to some mention of blitz chess.  Maybe it's just me.