I have just started to use the forum more often I would like to know what a cnc is

CnC (Constructive Criticism)

A way to talk about anything created to make the creator better at it.

I.e. Player A sucks at making Singleplayer replays, but uploads one of them anyways. Instead of mocking Player A, Player B tells Player A how he can improve.

Thank you senior swepples

http://forum.toribash.com/showthread.php?t=399843

I thought the acronym means Comments and Criticism

Yes, but it is widely used as constructive critisism

Cnc is a type of insult or compliment

No.

Don't talk about the stuff you haven't atleast googled or something, in an attempt to raise your post count, it'll just confuse new members.

contructive critisism,its comments you can do on the community helping others to improve skill in something,becoming better by that coment,mostly you find they in replays of other people