Buying a cheap knock-off is not just a problem with watches and hand bags—if you go onto Amazon's website to buy the latest bestseller, you might accidentally end up with an imitation book. Bob speaks to Fortune senior editor Stephen Gandel, who looked into the knock offs on Amazon, and found a number of books that he says were clearly meant to confuse people by trading off of more popular titles.

Buying a cheap knock-off is not just a problem with watches and hand bags—if you go onto Amazon's website to buy the latest bestseller, you might accidentally end up with an imitation book. Bob speaks to Fortune senior editor Stephen Gandel, who looked into the knock offs on Amazon, and found a number of books that he says were clearly meant to confuse people by trading off of more popular titles.