Here's something cool everyone should know about: Google now tracks packages and other numbers.

UPS tracking numbers example search: “1Z9999W999999999” FedEx tracking numbers example search: “fedex 999999999999” Patent numbers example search: “patent 5123123” FAA airplane registration numbers example search: “n199ua” FCC equipment IDs example search: “fcc B4Z-34009-PIR” [via Boing Boing]