So, you want to avoid talking to pesky telemarketers/charity seekers/poll takers/magazine renewers/etc?
Page: FTC Don't Call List
Page: Fighting Autodialers
Page: Fighting Empty Caller ID
Page: Using Welcome Menus for Privacy
Page: Making life difficult for telemarketers
Page: Using Call Screening
Page: Call Screening Options
Page: Screening Calls with Recorded Introductions