Well I will talk, usually just light conversation or whatever, I'm never like inappropriate and am pretty social, one game I actually distracted MYSELF by talking and misplayed a turn and lost the game because of that turn, but in all honesty I'll hold light friendly conversation, but if the other person isnt talkative or anything then I'll just stop and play, and the conversation definitely helps if a game is very one-sided. If I was ever asked, I would certainly not talk, and I wouldn't disrespectfully guess opponent's moves in a smart manner, I would joke around by asking my opponent to not Bebe's for Claydol, although they wouldn't oblige to my request.