Did you know that Windows Live Search allows you to track packages by typing in tracking codes?
With the new package tracking answer, users can now use Search to access and follow the status of packages delivery process. We detect a tracking ID in the query and display a link to the right external provider to get shipping status of packages. In the US, we support FedEx, UPS, DHL and USPS.
Some sample queries:
kurtsh
Kurt Shintaku's Blog 