Phonezilla: "Then, however, I decided to look up information about junk mail on the web and found this invaluable page at junkbusters. As it turns out, the USPS offers a form - form 1500 - which was originally designed to stop the mailing of porn and offensive stuff to a household with children. However, as junkbusters points out, this form can be used to stop junk mail as it is the sole discretion of the addressee to determine what is "offensive"." [via Cam]