One replay per post.
When you post a replay, you must provide C&C for the last replay.
What you're supposed to be enforcing is a max. Not a minimum.
This says when I do post a replay I'm required to also give cnc. This does not say that I'm required to post a replay in order to cnc.
I'm not even trying to be edgy right now. I just took the time to cnc someone elses replay without asking for someone to cnc mine back.
I'm not entirely sure what's wrong with this but I'd still like you to be a bit more explicit in the rules you put down and enforce.