Pretty sure this is a slav, and I believe c5 is a release of tension that is seen as sub par in most variations of the slav. E5 is also a fairly common thematic break in most slav positions.

I don't really like your superior tone. You may be good at chess, but just chill.

conehead, I think his tone was just fine. I don't really like your argumentative tone. You may suck at chess, but just chill. 

Correct me if I'm wrong, but doesn't that sound like an argumentative tone? You may be a stupid hypocrite, but just chill.

@boneheadzombie...

If we want strong players like NM iFrancisco to give us the benefit of their expertise, perhaps we could treat them with some respect?

Who are you talking to?

finally, someone who is not arguing with me! =)

Isn't that the Slav? Anyway, this is faster, as NM iFrancisco said:

an immediate ...e5 also looks juicy.

Francisco criticized a move, not a player. He pointed out the flaw of c5 in clear terms. I see nothing whatsoever in his tone or his message that disrespected the person who made the moves.

Yeah. It's all a bit of a hissy fit...

ok thanks

i just played a bullet game and lost. i wasn't upset at the fact that i lost, only that the person insulted me, banned me, and posted a hate note. guess i'm just pissed because of that.

nice idea to the QGD  ifrancisco , b6 is good idea to exploit white premature c5 ..  and advancing the e5 is long procedure to do .. 

A general rule of thumb: c5 works for White after ...a6, and ...c4 is usually only playable for Black after White has played a3.

Just so.  The reason is that in these cases after ...b6 (b3), there is no recapture with the a-pawn, so the c-pawn is left backward on a half-open file and is a natural target.  If the a-pawn could recapture, the c-pawn can swiftly advance ...c5 (c4) and is now a strong participant in the central battle, not a weakness.