http://www.pcgamer.com/valve-wants-videos-of-your-steam-controller-in-action/

I've never used a Steam Controller, and I'd be willing to bet that most of you haven't either. It was announced in 2013 with a promise of "supporting all games in the Steam catalog," and after a less-than-impressive hands-on debut and some extensive reworking, we declared it to be "almost as good as a mouse" under the ideal conditions.   

Valve has continued to work on it, and now it looks as though it's gearing up to give it a more concerted marketing push, too. "We're looking into making a highlight video of the Steam Controller in action/shooter games to be included in the Store page. If you would like your video to be considered please post a link here. Preference will go to videos that utilize trackpad + gyro configs," Valve wrote in the Steam Controller forum.