Can You Hear Me Now?

You know I've gotten over my dislike of cell phones in the library. Usually, people aren't any louder or more stupid than they are when they are talking to a person sitting next to them. They key word is usually, of course. But I could go for banning cell phones just so I don't have to listen to people say, "Can you hear me? Hello? Hello!? I can hear you, can you hear me?!"