Collaboration (Score 4, Interesting)

I'm surprised that nobody has mentioned the power of the collaboration features in Google Apps. I love OpenOffice and I use it for everything that only I need to maintain, but when it comes sharing spreadsheets with friends, teammates, etc. Google Apps is in a totally different league. Try having 3 or 4 people edit the same spreadsheet at the same time on any other platform. To me that is the main reason to consider Google Apps over OpenOffice.