jadarite: sorry to ask you once again: dont you think it may be "unsporty" to cancel a game once youve started it? you may tell people before if you preferred a special opening or so - but cancelling after accepting???

i imagine in real life: sitting in a cafe, with a chessboard. you come to my table, sit down,  i make my first move. you stand up and say "sorry, but thats not my opening" or "sorry, i have to go now"...