Curse? Necessity? Plague?

You've probably seen that video sneaking around Facebook. The one where Person #1 on a cell phone bugs Person #2 on a cell phone by pretending to have an equally loud conversation but just responding to Person #2's (supposedly too loud) conversation prompts. I say "supposedly" because it didn't actually seem to me that Person #2's conversation was all that loud...and Person #1 came across as rude...to me, at least.
There are an awful lot of rude cell phones out there, though. (Oh, you mean it's NOT the phone that's rude? Oh.)
Yesterday we had a 3 hour bus ride and were immediately in front of a whiny-voiced woman who used the whole time to catch up on everyone and everything. Actually, yesterday was full of rude cell phones.
A few years ago, I had the extreme good fortune to spend New Year's Eve in the same room as someone who was so important that she got phone calls and sms'es ALL NIGHT long...wishes for the new year and such. You know, important stuff. I guess she didn't know the phone's volume could, you know, be shut off. She also doesn't know how close she came to having that phone take a swimming lesson in the toilet.
Do I sound crabby yet? I do? Oh. Sorry. It's just this woman's phone apparently only works on speaker phone. On a crowded bus.
I value my privacy more than that. But whatever.