The ADN Plugin of the Month exists to show would-be developers how easy it is to personally extend the functionality of our design applications. That's why all of the plugins of the month come with the source code. You can see a complete list of past and current plugins in the catalog.
In addition to providing getting-started training material for would-be-developers, many Autodesk customers download these simply for their utility. That's why it is quite common for the ADN team to make updates to these plugins in response to customer requests. The latest update is BrowsePhotosynth for AutoCAD. These plugin changes were made in response to service URL changes to PhotoSynth by Microsoft.
The ADN Plugin of the Month catalog page has plugins for AutoCAD, Inventor, and Revit. Within each section per design application, the plugins are listed from newest to oldest. You will find the BrowsePhotosynth plugin under the AutoCAD section in the October 2010 slot.
Responding to feedback is alive in the lab.