It also acts as Steam's XBLIG equivalent for games that haven't (yet) been approved for Steam proper, which I don't think is a bad thing. As long as they allow

It also acts as Steam's XBLIG equivalent for games that haven't (yet) been approved for Steam proper, which I don't think is a bad thing. As long as they allow developers to link to their own downloads and homepages, this is going to be a huge opportunity for smaller indies to market themselves, with a Steam brand name and a simple voting mechanism. As a developer of niche games, I'm pretty excited about it.