Valve announces plans for a free weekend of Day of Defeat: Source, the World War II first-person shooter:

This weekend Valve is inviting everyone to try Day of Defeat: Source for free via Steam. Visit Steampowered.com to pre-load the game and be set to play at 12:00 pm PST on Friday, when the Free Weekend begins. Join the ranks as Axis or Allies troops located in Western Europe during the height of the war in 1944. For more information, visit www.steampowered.com.