Valve announced a new online feature nicked Steam Cloud that will save users' saved games and configuration files indefinitely:
Half-Life and Half-Life 2 will be the first games to support the service. User key mappings will also be saved in Counter-Strike, and Left 4 Dead will ship with the feature.
If players are offline, the service will store the data and then add it to the network on the next connection. According to Valve, saved games and configurations will be stored forever.
Valve further noted that the service will be freely available to developers, and is set to launch in the "near future."
The company also detailed plans for several new Steam systems, including a driver auto-updater and calendar functionality.