Need for Speed

World-wide web:

• Driving directions to Long Beach Island, NJ. : Database lookup, shortest path, range computation
• Zip+4 for my new address in Durham: spell correction, fast lookup, rule-based.
• Search for web pages mentioning a particular article .
• Compute and manipulate travel information for an upcoming trip: another kind of shortest path, database lookup.

It's gotta be fast or it's nearly useless.