Do you know what BPOS stands for? It is Microsoft's Business Productivity Online Suite. This is their software as a service offering.
BPOS has Exchange, SharePoint, and Live Meeting. The cost is $10/month/seat. Users get 25GB of e-mail space.
Competitors include Novell GroupWise and Google Apps. I don't know whether $120 a year is a good deal for such a service. It seems a bit high. Both my company and main customer have workstation based Microsoft Office. Their license fees are probably $120 per person until we upgrade.
A Little Bit of Crypto - I have been trying to figure out to "collision resistant" some of these standard hash functions are. It is a tough concept to get my head around. I figure...