Another thing this feature (which is $12/month, and that includes the $8 monthly fee for
Caller ID) stops is those damn
auto-dialers (those devices that
telemarketers use to call multiple people at once and
hang up on everyone except the first person who answers). These don't even get through with Privacy Manager.
Before I had Privacy Manager, I used to get those kinds of calls almost on an hourly basis. Since then, I get maybe one telemarketing call per week.