Federal Voting Assistance Program

Servicemembers, their families and other citizens living outside our United States can get help voting thanks to http://www.fvap.gov/.

If if you are a U.S. citizen 18 years or older and ...

• An active duty member of the Armed Forces, Merchant Marine, Public Health Service, NOAA, or
• A family member of the above, or 
• Any other kind of U.S. citizen residing outside the United States ...

... you can simply go to http://www.fvap.gov/map.html, click on your state of residence, and follow the directions to get your absentee ballot.

This looks like a useful and convenient service that everyone it applies to should use. Spread the word!
More:
http://www.fvap.gov