From [URL=http://ddreview.5elements.net/]DDReview[/URL]:

[QUOTE]One thing PC gamers despise the most are various digital rights management schemes enforced by publishers. DRM can range from a simple disc verification system to a limited activation system, often hindering long-term game access for legitimate consumers. Thus, one of the first things dedicated gamers want to know before a purchase is what form of DRM a game will use. However, it would seem digital distribution services feel this information is somewhat less important than others.

First and foremost, there are no laws that I am able to find which dictate companies must share this information with consumers, who must rely on the goodwill of these services or research the information for themselves. The Entertainment Consumers Association (ECA) is lobbying the Federal Trade Commission (FTC) to change these circumstances and require companies to fully disclose DRM information.[1] One suggestion is that this is done similar to the ESRB ratings, with an icon based system indicating how intrusive the DRM may be. While the current campaign primarily refers to disclosing this information on retail boxes, if it succeeds, it no doubt paves the way for the same requirements regarding digital sales.[/QUOTE]

Full article [URL=http://ddreview.5elements.net/2009/10/drm-being-hidden-from-consumers/]here[/URL].