Pre-match and post-match threads would be ok, I agree with Graham tho, they don't have to be sticked since most match threads stay on the first page for days already.
As far as during the game goes, you're better using the Talkceltic chatroom so you can react in real time instead of everybody posting a couple of words commentary every few minutes.
http://www.talkceltic.net/forum/celt...-chatroom.html