WHITELIST
the real solution is to provide a WHITELIST option on phones. If a company like Blackberry would offer WHITELIST control of incomming calls -- I'd switch service Monday.
WHITELIST Control of Incomming calls: If you are not in my Contact List you call is REJECTED leaving only a log entry. It DOES NOT RING
the other feature that is really needed on phones is a 1-button vehicle mode. this to silence all ringing and let calls go to voice mail sms messages to log.