Today, Valve has announced Steam Broadcasting as part of its beta client. Mac/PC Steam users (anyone who has purchased a game from the service) can now opt in to Steam’s new integrated broadcasting beta, which essentially allows gamers to get full Twitch-like streaming functionality directly inside of the Steam ecosystem.

With the rising popularity of Twitch’s live broadcasting service among gamers (they just sold to Amazon for nearly $1 billion), not to mention its adoption by Sony and Microsoft for their new boxes, it’s not surprising the PC gaming juggernaut would introduce similar functionality. Even better, the new service will come at no additional fee and require no additional software…

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