The National Do Not Call Registry opened today, and was promptly Slashdotted. But once things settle down, you’ll be able to register your phone number to recieve no telemarketting phone calls (save for politicians and charities) for five years, starting October 1. And if you live west of the Mississippi, you don’t even have to wait for the web site to start working again — just dial the number on this page from the phone number you wish to protect, and unlike the web registration, you won’t have to provide an e-mail address. I just did it, and it’s fantastically easy.