Telemarketers - How do you deal with them?

I used to love it when my parents would pretend not to be old enough to pick up the call ("I'm babysitting for them") even though it was blatantly obvious they were.

Of course, since we've gotten Caller ID, we never pick up phone numbers that come up as "unavailable", we pretty much screen almost every call that goes through the phone.

Think of it as a necessary precaution.

Can I also add that telemarketers in Japan are notoriously difficult to hang up on? They're so polite that you almost feel like you're doing a bad thing by rejecting their offer. I figure if they did a little bit of that in America, the success rate would go up.

Of course, most of your telemarketers are people who don't want to be doing that job anyway, so it's hard to get motiviated >_>

Jam it back in, in the dark.