Originally Posted by http://www.xbox.com/en-US/community/ambassadors/

We are proud to announce the renewal of the Xbox LIVE Ambassadors program! Going forward, I (DMZilla) will be managing the program, with occasional guest appearances made by the lovely Ms. MacheteBetty. Many thanks to Trixie360 for starting the Ambassadors Program. We are excited as she takes on her new role as Social Media Lead for Xbox LIVE.
Our first order of business is to “hit refresh” on Ambassador membership across the board. We know some folks have had life changes (kids, job changes, etc.) that make it hard to sustain their previous level of involvement in the community. We also know there are some terrific newcomers to Xbox LIVE® that would love to join the program. The Ambassador Program is here to not only recognize the "most helpful of the helpful", but to provide a reliable source of community members that volunteer to help answer questions and play games with anyone that is up for a good clean multiplayer match.
So, I’m about to say what many of you have been waiting for. Ambassador Applications are now being accepted!

Requirements:
All Ambassadors are required to maintain a Gold membership. If you don’t plan on maintaining a Gold membership, then please don’t apply for the Ambassador Program.
Community members who have had previous run-ins with Xbox LIVE Enforcement of any kind in the past year will be ineligible.
Finally, those who are accepted into the Ambassador program are expected to visit the official Xbox.com Forums for updates from DMZilla and MacheteBetty, as well as share in the conversation with other Ambassadors. More details will be provided upon acceptance into the program.
Please see the application below, and keep your response to under 500 words. Email your response to xblapapp@microsoft.com. Make sure NOT to attach your application to the email, just copy the text right in the body of the email.
We look forward to hearing from you, and good luck!!
--DMZilla and MacheteBetty

Application Email
Answer all of these in your application email to be considered:
Xbox LIVE Ambassador Application

1. Gamertag
2. What region/country do you live in?
3. What languages do you speak fluently?
4. Please describe how you have helped other Xbox LIVE members on the Official Xbox.com Forums, Xbox LIVE, or in any other way in the past 6 months.
5. What ideas do you have for the future of the Ambassador Program?

Please send your completed application to xblapapp@microsoft.com.

Being an Xbox LIVE Ambassador is a recognition of how you have helped out the Community on the Xbox.com Forums, Xbox LIVE, or external fan sites. Microsoft reserves the right to remove your Ambassador status at any time for any reason.