The World Wide Web makes it simple to retrieve information from cyberspace. Now researchers are devising systems for tracking down the information in the first place. Two years ago, the riches of cyberspace started to pale on David Filo and Jerry Yang, electrical engineering students at Stanford University. To be sure, says Filo, they were finding "plenty of cool sites and stuff" on the. World Wide Web, the web of linked Internet sites that invites users to wander from one to the next with the clickof a mouse. But whenever they went looking for a specific topic, they soon got lost. "So we started this thing," Filo says, "that allowed us to quickly categorize sites as we came across them, and we put it out on the [World Wide Web]."
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