Let me just say that I hate telemarketing. Hate, hate, hate with a purple passion those annoying calls during dinner, peime time and just about any time I don't want an unsolicited unwanted call regarding an unwanted product or service that is of no use to me...
OK, now that that is off my mind...
Here's an article by someone that shares my opinion:
http://wired.com/wired/archive/10.11/start.html?pg=9
Note the method at the bottom of the article. That now only stops that one call, but removes your number from that database! Next time that that database is sold (about every two seconds it seems) your number won't be included!
I am just having to much fun thinking about all the call centers going blank, operators sitting around waiting impatiently for just one phone to answer... It makes me all tingly inside...