Common Courtesy

Hello everyone in Free Speech. My capstone is on courtesy (or lack thereof) so I wanted to hear from people on a couple of items I am interested in getting some input on. Regarding cell phone use in public, do you think restaurants, banks, and other public places should post signage requesting cell phone use be outside? Are there some places that should/should not have such signage? For example, is it okay to chat in the coffee shop but not in the library? Does listening to people's private conversations annoy you or do you enjoy listening? Do you use/abuse your cell phone? Any related comments or anecdotes on this topic would be greatly appreciated! Thanks