Well this is so cool, It should be made as an Open Social Gadget.
In the Netherlands SURF works with the universities together on a prototype portal based on the OpenSocial framework. See: https://portal.surfconext.nl
How hard would it be to port your app to OpenSocial. It increases the reuse on many other platforms. The SURFconext architecture will play a role in the deployment of cross platform communications and cloud services on many Dutch universities. My guess: Researchers and departments would love to add this type of Gadget on their portal environment.