For general feedback about the game.

Visit the support site for any issues you may be having with the game or Steam.

September 10, 2012 - TF2 Team

Updates to Team Fortress 2, Day of Defeat: Source and Half-Life 2: Deathmatch have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
Source Engine Changes (TF2, DoD:S, HL2:DM)

• Fixed a bug that allowed malicious servers to execute restricted console commands on players
• Fixed a bug that allowed malicious servers to prevent players from executing console commands