Available immediately, users’ Steam library of games can now be managed remotely via the web. With an active Steam client running on the remote PC or Mac, users may log into the Steam web site or mobile app to access and manage their library of games, downloading pre-loads, new releases, or their latest purchases, as soon as they’re available. Head home to find your new downloads installed and ready to play upon arrival.
To kick off a remote download, simply visit your Games list on the Steam Community site, which can be accessed from your own profile using a web browser or the Steam mobile app on iOS or Android. If logged into the latest update of the Steam client on a PC or Mac, there you’ll see which games are currently installed, and have the ability to install others from your library. Or, seamlessly complete your online purchase with remote installation: When a remote session is detected, the Steam store will ask whether you'd like to download your new purchases immediately.
Now, what are you still doing here? Go give it a try!
http://store.steampowered.com/news/7971/
Коротко и по русски: удаленное управление закачками вашего стим клиента запущенного на компе.
