Found a comment on an article linked from the one above:
http://kotaku.com/i-think-gabe-has-mentioned-this-before-man..."I think Gabe has mentioned this before many times, he'd like to get rid of Greenlight to leave developers open to place their game on steam.
Then, users would curate the titles through their own customized storefront. This would drive word of mouth and generate free adverting for the companies that really on the steam digital store.
So think of it as following your favorite youtube channel/ store front because it has niche titles that are in line with what you like. You wouldn't have to dig for titles if that's not your thing.
This way, the devs of said niche title appears directly to its audience and yet still leaves the choice to the end user if they want to dig into the onslaught of new releases.
I really hope Gabe follows through on this idea because it keeps options open and doesn't give you a force fed walled garden that Sony, EA or MS is so dead set on controlling and manipulating end-users/devs with."