Theres no reason you couldn't have been doing the same thing all these years, not just with game devs but with the devs of every piece of commercial software on Linux to help them get their name out there and sell more copies of their software. There seem to be no shortage of people that are willing to drop $50 on a piece of Linux software for no other reason then to support the platform.
You rarely ever mention commercial Linux software at all, the few rare exceptions outside of a handful of games that you seemed to be interested in personally where Lightworks, Nero and Corel AfterShot Pro. Yet you have never done a review of these products to show how they compare to their Windows and OS X versions as well as to the OSS equivalents.
So again, why do you think why think every Linux user that isn't one of your regular apologists think that this site is a bad joke and a blight on the OSS community? Say all you want about PTS, but PTS didn't bring you one single new reader did it?