A practical note today: For everyone who has an account with Yahoo, the bastards have reset your marketing preferences to "I beg you to deluge me with crap, including by phone and snail mail." I have confirmed that this includes people like me, who only have Yahoo accounts for yahoo groups.
Please read the Slashdot story and follow the directions on how to undo this. Of course, none of my readers were stupid enough to give their real address or phone number, right? ;-)