Yesterday, GameTrailers TV host Geoff Keighley revealed that, according to his sources, the PlayStation 4 will employ some form of digital rights management when dealing with used games. Twitter's gamer community took it upon themselves to show Sony how bad an idea this is. Spurred by Keighley's words, numerous gamers on Twitter are currently bombarding Sony with messages about the PS4's supposed used games DRM. The campaign was started by NeoGAF user famousmortimer who, in a forum thread, asked people to tweet several key Sony personnel, among them Worldwide Studios president Shuhei Yoshida, about their displeasure. "The gist of it is that Sony is listening to the backlash that Microsoft is getting and they are basing decisions off of this," wrote famousmortimer. He went on to request fellow forumgoers to respectfully voice their concern, to "help give a little more momentum to something Sony seems to be leaning towards already." And that is exactly what happened. Some asked Sony not to go down the same route Microsoft did, referring to their decision to implement an activation fee for used games:While others tried a more emotional approach:Sony has yet to comment on the issue, and we will update you should they do. All we know is that the people have spoken: no DRM, no restrictions. #PS4NoDRM [Twitter] #PS4USEDGAMES [Twitter] Is Sony listening? Let them know... #PS4NoDRM #PS4USEDGAMES [NeoGAF] Questions? Comments? Contact the author of this post at andras-AT-kotaku-DOT-com.