1. "Enterprise Vista
2. "Microsoft records Software Assurance sales as unearned revenue, whichis realized on an ongoing basis. During the average quarter, about 25percent to 35 percent of Microsoft revenue comes from unearned revenue.Microsoft recognized $6.3 billion in unearned revenue during fiscal2009 second quarter; total revenue was more than $16 billion."
And of course recently Microsoft announced price discounts for MS EA... like around 25%. Go figure? Also find out what happens to software ownership if you dont renew?