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Steam users have spent $19 billion on games they’ve never played
(www.pcgamesn.com)
Steam is a video game digital distribution service by Valve.
Steam News | Steam Beta Client news
Useful tools:
SteamDB
SteamCharts
Issue tracker for Linux version of Steam
If it makes Steam stay at #1 and stimulates development of titles we respect it's worth every penny.
And if some indie dev lasts a little bit longer because I threw away a few dollars, i'm all for it