We have been using servicedesk for a few months and wanted to open up a discussion on how people are identifying groups, catagories, and levels.  Quite frankly our model is inefficient and I would love to see how other people are organizing groups (e.g. network, security, server), Catagories (e.g. virus, desktop hardware, software problems), and levels(e.g. request for info, service request, minor/major incident). 

BTW, those are some of my examples.  Also, I wish the demo site had more content that way I could get some ideas my self. Thanks ahead of time