I'm sure this has been discussed before. I'll look around tonight and post some links if I find anything relevant.

When do you c-bet? Assuming that the answer is "almost all the time", then perhaps a better answer is when do you not c-bet? To what extent does it depend on your position? Certainly we've all experienced the players who float any blank flop, often to try to take it away on the turn/river. Assuming you've identified such a player, how does it affect your tendency to c-bet against him in position? Out of position? Do you like to run a mix of skipping and/or delaying the c-bet? Against such a player, would a "33% to 50% c-bet matched with 80% to 100% value bet" line work out (probably betting the turn > 70% of the time if given the opportunity)?