Indeed tsahyt, I'm also a bit concerned. I'm actually divided here. Besides the "flashplugin" package, I don't have any more proprietary packages in my laptop (I didn't remove the kernel proprietary blobs too), but I really want to install Steam and play Counter Strike 1.6 on Arch. It would be amazing. I haven't made up my mind yet, but I'll probably end up installing Steam, disregarding DRM and closed source software.