That could work, but I don't know how to make them, so we'll have to find something else.
I know! Something in our sigs, how's that? Like a "Go Eagles" or "Go Packers" in the opposing teams sig.
I remember during the 2001 NBA Finals, Gov Ridge of PA and Gov. Davis of CA had a bet that each would put up an ad for the state that won on the opposing state's webpage. So since the Lakers won (grr), Ridge put up a California ad on the Pennsylvania website.