The longer I do search engine optimization, the more enjoy it. In the beginning I found online marketing in general and SEO in particular extremely confusing. The concept of searching in a web of linked knowledge was relatively new for most people. What I find interesting is that the algorithms are based on “information retrieval”: the retrieval of information. Librarians have been doing this for centuries, so this technology is not really new. I used to search for information with microfiche when I was a schoolboy, but that was in an different millennium.