Kansas is revamping the way it issues vanity plates, and it means a lot of residents are going to lose their 'duplicate' personalized plates. They're not really duplicates, though: Unlike most states, Kansas allows people in different counties to have the same alphanumeric combination, so while the tags might appear to be copies, they are registered in different counties and that technically makes them different plates.
So here we have the kind of real-time social engagement that the Internet originally promised us. A site called Brandtag allows you to enter a 1-word attribute for a brand -- like "quattro" for Audi -- and then creates a page with the popularity of any brand identifier denoted by its size on the page relative to every other tag used, i.e. a tag cloud. For instance, one of the biggest words on the Ferrari page is "red," while one of the (many) smallest words is "viagra."