Editor’s Note: Part 12 in an irregular series of stories from my many years in Silicon Valley. Part 11 talked about the time I got called into HR's office to meet with lawyers over industrial espionage. This time, a story involving gray hat search engine marketing in the early days of the Web. DMOZ is now closed. Believe it or not, before the world of automated spiders that crawled the entire Web and ranked the results for your searches, much of the way we found content on the Internet w...