What to do about Telemarketers

Someone has given me a few good ideas of how to handle a telemarketing call and junk mail that may in the future reduce the number of calls and junk mail you get.

1. As soon as you realize you have a live telemarketer on the phone say, "Hold On, Please...", and put the phone down and go back to what it was you were doing before you were interrupted. When the phone makes several beeping noises it's time to hang up.
2. When you get "ads" enclosed with your phone or utility bill, return these "ads" with your payment. Let the sending companies throw their own junk mail away.
3. When you get a pre-approved credit card application with a postage paid return envelope, return the application not filled out in the envelope and mail it back. Hey, why not add some junk mail in there too?

Thank you, they're some great ideas.