I think they should take after baseball. You are allowed to argue with the umpire up to a certain point, but if you direct cursing AT the umpire, and repeatedly argue or just generally cross the line, you are ejected from the game immediately. In baseball, when a player is ejected, the team is allowed to replace said player with a substitute, however. In soccer, obviously if you are red-carded your team is down a man. Thus, I am in full support of giving a player a yellow card for stepping accross the line the first time, and if he does it again, he should see red. If referees actually stick to their guns and give cards for excessive arguing and players start seeing red cards, the conduct WILL change. It's a matter of the referees being willing to send a man off for it, and sticking to it consistently. Once the consequences become clear to players, they will learn to shut their mouths. Other professional players manage it just fine.