chk wrote on 12/16/09 at 18:28:55:
tbh, that made me laugh!
@Markovich: yes, I have noticed in the past that we share a different philosophy re opening repertoires. I am minimalistic, practical etc. Of course that has to do a lot with our difference in strength (markovich>chk, but maybe markovich=chk on an inspired day

) and also you playing a lot of correspondence. I am an OTB 'beast'.. so I cut a lot of corners.
I gave my comment above, since I believe there are many chess friends here that share my philosophy in opening repertoires. Also the Whites may be willing to know what most Black players will be prepared to answer to the various early-Bc4 lines..
There is a useful distinction to be made not only between OTB chess and correspondence chess, but between OTB play and preparation.
When faced with some unusual line in an over the board game, naturally the priorities have to be practical ones. At today's generally faster time limits it can be very risky to adopt the Geller approach of investing a lot of time to find the most strategically logical and tactically precise responses; it makes more sense to play reasonable moves and head for familar structures, and then do do some research at home later.
As to preparation, I suggest that De La Villa's approach (pretty much echoing Shereshevsky in The Soviet Chess Conveyer) makes a lot of sense:
prepare main lines against main lines;
prepare sound side lines against sound side lines;
prepare refutations against unsound lines.
1 e4 c5 2 Bc4 reveals White's hand rather early and Black should have no problem equalizing. After Black plays 2...e6, instead of pursuing his birthright -the initiative - White has to focus on preventing Black from exploiting the position of the bishop by ...d5 or ...b5. It is little use for White to try to transpose to an Open Sicilian with 3 Nf3; White would not normally play an early Bc4 against the Kan/Paulsen/Taimanov; it makes a lot of difference that Black has not played (and probably will not play) an early ...d6.
1 e4 c5 2 Nf3 d6 3 Bc4 is a lot better and indeed is a respectable form of Anti-Sicilian that has been played occasionally, with some success, by many GMs, including Adams, Morozevich, Svidler and Benjamin. Black is OK if he knows what he is doing, but so is White, who can generally reach a sound and easy-to-play Ruy Lopez set-up with c3, d3, Bb3, 0-0 in some order. It can also be viewed as a sort of Kopek system with the white bishop retreating c4-b3 rather than d3-c2.