Now that I'm thinking about it, another frequently expressed criticism is that Steam is a DRM tool. A combination of the following three sources should be reliable enough: 1. INDICARE published an article about it ("But although there are mostly massive complaints about Valve's rigid usage control system, [...] It is alarming to see how little consumers have reacted to this practice and that it has not negatively affected sales of the game.") 2. Richard Stallman, mentioned as a notable DRM critic at Digital Rights Management#Opposition to DRM, called DRM'd Steam for Linux games "unethical". 3. Defective by Design says Steam's DRM violates users' freedom. 82.170.113.123