Tracking package on Google Maps

Major package delivery companies like FedEx, UPS or USPS offer online tracking. One needs to enter the shipment number and the company displays the latest location of the package.
Package Mapping is an interesting website where one can look for online status package from FebEx, UPS, USPS or DHL not only in the US but globally. There are couple of added features to Package Mapping which are not available at other online tracking services. It displays the current location of the package on Google maps, there are Firefox and Thunderbird extensions available which are linked with package mapping to track your package, one can receive not only email but also RSS feeds for a particular package status.
If you don't remember the packaging company, no problem just enter the pakage number and Package Mapping with not only pull up the package location but also the packaging company information.