Heather Mills has been named the world's biggest gold digger by an online poll. The former wife of Sir Paul MCCartney beat Anna Nicole Smith in the survey by OnePoll of 2,000 British internet users. OnePoll spokesman John Sewell says, "In the hype surrounding Sir Paul's divorce, it comes as no surprise that Heather has been named the world's biggest gold digger. To walk away with so many millions after just four years of marriage is incredible."