sid0

No, generating keys for Steam is free. Valve only takes its cut from games sold via the Steam store.

Google is secretive about its datacentres, yes. Not all companies are. http://www.opencompute.org/

(I work for FB.)

The download progress meter's really awesome! ;)

edit: oops, didn't expect so many upvotes. The wink was because I wrote most of the patch for that. :)

Being very far away from anyone who deals with such things, I don't really know the answers to your questions, sorry. My comment was only about the secrecy of data centre designs.