→Cell phones: people with cell phones are unbelievably obnoxious
# Before entering a classroom, a library, a concert, a lecture, a play, or a movie, put your cell phone on vibrate. PLEASE. (How about just turn it off or silence it completely? You can't answer it, why should you care if it's ringing?)
# If you are in the library and feel the need to talk to someone on your cellphone, have your conversation in an area where people aren't studying nearby. Also refrain from having loud, long conversations with other people in the library when people are trying to study around you.