Moved to Forum: Original Link
Register for the (free, online) Microsoft Ignite Conference now, and you should receive a Microsoft Employee Store login after the conference which allows you to purchase discounted products up to a maximum total of $200.
You can purchase XBOX games, Windows Games, MS Windows, Office 365 family and individual. Office was US$20 last time I checked. You can stack up to 5 years of Office subscriptions.
NOTES:
- You should receive a link after the conference.
- The "spending limit" is the maximum you're allowed to spend in the MS Employee Store
- The offer will expire.
- I make no guarantees that you'll get a link, it's worked for the last 2 Ignite and Dev conferences.
Other deals as well, search OZB :)
(Edit: Removed ambiguous reference to spending credit. There is no credit on offer here.)