What is "Yahoo!" ?

Yahoo! actually does stand for something. According to David Filo and Jerry Yang it stands for "Yet Another Hierarchical Oficious Oracle". Say that five times fast. As you may(or not) know David and Jerry started Yahoo! in the mid 90's as a web directory of the then infancy of the world wide web. The original name of "David's and Jerry's Guide of the World Wide Web" just didn't have a catchy ring to it. Little did David and Jerry think that they'd be a part of Forbes 400 wealthiest men today. Paul Gil goes into more detail here at About.com.