RichardL,
Thankfully there does seem to be far fewer "bluetools" (people that annoyingly wear and use their bluetooth earpiece in public) these days than a few years ago.
You know a technology has come mainstream when you see people in sweats, at WalMart talking about absolutely NOTHING 24x7 on a bluetooth. Frankly, if you are a mobile business person that makes $100k deals over the phone, then fine, walk around being a bluetool. But for the rest of you out there, keep the bluetooth for your car, please. I and others simply don't want to hear your conversation, and frankly, you and your conversations just aren't that important. Same goes for talking loudly on a cellphone in public (at an airport, on the train, etc). Some people need a nice hot cup of STFU.
TJR