Further, when you make a purchase, your download link also has an option to increase your donation (in case OP feels that he wants to contribute more than a dol

Further, when you make a purchase, your download link also has an option to increase your donation (in case OP feels that he wants to contribute more than a dollar later one). And as far as bandwidth goes, there is a Bittorrent download option that probably beats out the Steam servers anyway.