My iPhone is set to "Silence Unknown Callers." It's the perfect compromise. If a call is legitimate they'll leave a voicemail and I just call them back.
I discovered recently that my Verizon phone service’s voicemail had been full for several months. I’m not sure how I was ever supposed to discover that, but I ignored what turned out to be an important phone call and got burnt because I assumed I’d get a voicemail.
