AppTrap: Mac Uninstallation Helper

I have used AppTrap for sometime on my Mac.  When I began to use OS X a few years back I was impressed with the ease of uninstalling an application.  Drag the Application to the trash, empty the trash and the program was uninstalled.  How ever I soon noticed preference files were being left behind.  After a little searching I found AppTrap.  When an application is moved to the trash AppTrap automatically asks if you want to move the associated preference files to the trash also.  AppTrap was developed by Markus Magnuson but is now maintained by Kumaran Vijayan.   v1.1.5 is a 560KB download, double clicking the download will install AppTrap to the System Preferences pane.  AppTrap can be found here: http://onnati.net/apptrap/.  Source Code is also available.