I think that it's safe to say that everyone's been annoyed at one time or another by someone in a restaurant, on a bus, or in a store by someone who was carrying out a loud conversation on their cellular telephone and refused to make any effort to leave the area. Now, there are some of us who sometimes don't have a choice in the matter (like those of us who are on call for work, though many of us at least make the attempt to get away from everyone else in an attempt to not be rude), but there …