Yahoo!, October 22, 1996
Yahoo!’s method of indexing sites sent traffic to homepages, allowing users to navigate the Internet by specific areas of interest as opposed to a searchable index of pages. It’s pretty clear from this 1996 home page just how simple this indexing was, but it was one of the first sites to offer anything like it. In February 1994, founders David Filo and Jerry Yang, Ph.D. candidates at Stanford University, came up with the concept as a way to categorize their personal interests on the Internet. They started out "Jerry and David's Guide to the World Wide Web" working out of a campus trailer, but as the number of interests increased and branched off into more categories, Yahoo! ("Yet Another Hierarchical Officious Oracle,") was born.