Microsoft has started accepting payments made using bitcoins. Bitcoins can now be used to add funds to Microsoft accounts that can then be spent on a wide range of Microsoft services.
Bitcoins can be used to buy content such as games and videos on Xbox game consoles, add apps and services to Windows phones or to buy Microsoft software.
Microsoft made no formal announcement about backing of bitcoins. Instead, it simply added a page to its customer support pages detailing how the virtual cash could be used to top up a Microsoft account.
Currently bitcoins can only be used by customers in the USA. In addition, bitcoins must be used in fixed amounts. More details can be found on Microsofts blog here:
Bitcoins are slowly making their way into mainstream businesses, and now Paypal, Dell, Expedia, Newegg and many other firms accept payments made with them. Bitpay processes bitcoin payments for over 50,000 firms.