Wow! Your modules look absolutely amazing and so timely! Congratulations ..

I see that Time Magazine has an article regarding Facebook on the desktop notifier today

see: http://www.time.com/time/business/article/0,8599,1894307,00.html

Would be great if we could follow:

http://drupal.org/project/activity based on http://drupal.org/project/user_relationships in your application.

Look forward to further development :)