How Can Black Use his Advantage?

Black has just captured white's c-pawn.  How can he build on this advantage in the endgame?

Is this an on-going game?  If it is we should not be commenting on it.

Just wondering!!

The game ended Dec 20th, you can see the whole game http://blog.chess.com/jlueke/two-games-in-the-french-advance

Patient maneuvering is the name of the game here.  The first thing the players should notice is the opposite color bishops.  With heavy pieces, this is great for the stronger side (black) when attacks exist and a great drawing resource for the weaker side if he can trade off the heavy pieces.

I see in the game black traded his active rook for white's passive rook.  Not only because of the difference in activity but this was also bad because it gets white that much closer to his dream ending and diminishes black's attacking ability.

So how can black slowly build his position?  Ideally in positions like this black would operate (places his pieces) on the light squares to attack white's weaknesses.  So the infiltration with Rc2 is very appealing.

Black's first focus though should be on his very poor bishop.  Moves like f4 or Bf7 are necessary.  I would probably play f4 (or else white will play it himself) and then Rc2 with a possible threat of doubling on white's second rank (always a good way to build pressure).  But from there I don't really see an attack that works.  One idea after Rc2 is slowly moving the king and g+h pawns down the board to try and loosen white's king's position (of course this may not be safe for his king either).  Another is if he can somehow play a5 and b4 (although white shouldn't let him) the passer would be one advantage to work with -- it itself may not queen, but it may be able to draw enough attention that a kingside attack could be effective.

This game is far from over, and black has a small advantage, but because I don't see an attack so my opinion is white should be able to draw with accurate play.  Black will avoid heavy piece trades and maneuver to pressure white (and in general wait for a mistake).  White will try to find a fortress and if black is careless may get to pressure his weak pawns on a6 and d5.

Orangehonda, I think you are definitely correct about the rook and the need for black to slowly improve his position.  F4 is probably the way to go to start along with rc2, in the game I exchanged rooks because I thought I saw some queen tactics but then white didn't have any pawns to pick off even after checks. 

Let me ask another question, would it be a crime for black to offer a draw here?

It wouldn't be terrible to offer a draw here -- but if you draw too early you miss out on the chance to improve any mistakes you may make, making you that much stronger for your next game.  That's how I look at it.

Yeah that's what I was thinking after wrote the question.  If I hadn't played it out I wouldn't be spending as much or any time trying to figure out how to improve in these types of positions.