My theory has always been that GOOGLE will rule the world. If the people depend on you then they will know nothing else. Pivacy and security of the google domain...keeping the children safe by keeping their data within our domain. Site:Documents, Email, Sites, Videos, Apps (except. Reader) Google Email is free but pay for options, Email retention, Spam, etc.
Share Point is a microsoft the fastest growing product on the planet but, google we crush is because its free. Google apps not only meets the needs of the individual but, your entire user base.