When electronic mail was first developed, it was devised for one purpose, and one purpose only: To peddle pills of Viagra. Because internet marketers love teaching others about medicine and the alphabet, the word "Viagra" is always spelled in hot, new, creative ways. For example, it might have a lower case "L" in the space where a capital "I" would go, or perhaps an "@" symbol where the letter "a" should be. After I received 80,730 different emails trying to sell viagra, I started to wonder: How many different ways are there to spell Viagra?