Yeah I thought the same, unsporting yes, suprised it's actually illegal though. Would explain why you don't see it much I suppose. Yeah that's the one.
When I used to play, I often thought about shouting 'Keeper's!' when I went up for a corner Never did it though for fear of getting my head kicked in.
We don't see it much because most people know what their team mates look like and sound like! Chab got schooled!
nah that's just plain unsporting. As bad as diving maybe worse. No doubt due to the obssession with winning we'll still have dirty cheating players shouting keepers etc so defenders pull out of heading it