I had the misfortune to buy a certain number of points on Xbox LIVE in order to buy software. Imagine my surprise when I realized they were billing me $10.15 a month on top of the charge for the points! I pointed out to Microsoft, and then my bank, that I did not authorize a "subscription" of any kind. But I am told that somewhere in the fine print, there is a clause that says, "We can sign you up for anything we like, and if you dispute it, we will keep your money." Or something more or less to that effect.
If anyone out there wants an excuse to pirate Microsoft Office, I hereby give you my blessing.