Walking the thin line, as is usually the case with this kind of topic (and the discussion is off-topic - I personally don't mind, but I cannot speak for the other mods).
& IA, it would be nice to be able to run the games without the client. Actually, I think some can be run like that, but they are very few. On one hand, I'm liking the social aspect of Steam (the new friends page with screenshots etc.) and Greenlight needs a lot of work imo, but it's a cool addition. On the other, the direction they are taking scares me, they are fast becoming a really large service and I fear their attention will become divided between one too many things. Maybe I'm just paranoid.