MasterCard and Microsoft announced a new strategic initiative to market and sell Microsoft's cloud productivity service, Office 365. You can get an automatic 10% discount when you buy through their easysavings.com discount program and use your MasterCard. There are several plans that start at $6 per user per month for less than 50 seats (undiscounted).
We last looked at Office 365 here and compared it to Google Docs and Zoho Docs. Microsoft has changed a few elements of its plans since our article came out this summer.
The easysavings.com program is similar to those from other credit card companies, and there is a list of other discounts that are available. You don't need to do anything to get the discounts, other than use your credit card, once you register. For small businesses, this might be worth a few bucks off your bill if you use any of these service providers: you can save 10% off Budget car rentals, and 5% on Frontier airline tickets too.