Short for year 2000. It also refers to the worldwide scare about the Y2K bug wich would result in massive shutdowns and miscommunications of computers. The fear was based on the premise that computers will revert to 1900 once the clock ticked Year 2000.
Supposedly an acronym for Yet Another Hierarchical Officious Oracle. Whether true or not is immaterial as users know Yahoo as Yahoo and recognized as the other najor search engine and web-based email provider.
A list of websites suitable for the young. From Yahoo.
