I am perversely proud of being a cell-phone (sell the phone) rejectionist - had one, hated it, didn't renew my contract. Free at last! Free at last! Free at last!
But being personally cell-phone free doesn't eliminate cell-phone's annoyances from my environment. But really, it's not the cell-phones, it is the people who use them. It is my opinion that people are impolite using them because we as a culture/society haven't gotten used to using them, and established what is polite and what is rude when it comes to cell-phone use in public.
Personally, I don't tolerate someone letting a ringing cell-phone interrupt a conversation. If someone stops talking to me to answer the phone, I walk away from the conversation.
But I don't want to go on about cell-phones in society. Instead, I want to mention an idea I had to make cell-phones even more annoying than they already are - really useful self-reflexive ringtones.
1. Phone off the hook
2. Busy signal
3. "the number you have reached is no longer in service..."
You get the point.
But upon checking I discover that at least one of these is already available for purchase.
Just goes to show.