Mozilla's decision to implement DRM code is disappointing and Cory Doctorow's article titled "Firefox’s adoption of closed-source DRM breaks my heart
" is worth reading for his perspectives. I noticed one positive aspect of the Firefox implementation, though -
There are other ways in which Mozilla’s DRM is better for user freedom than its commercial competitors’. While the commercial browsers’ DRM assigns unique identifiers to users that can be used to spy on viewing habits across multiple video providers and sessions, the Mozilla DRM uses different identifiers for different services. And unlike the commercial browsers’ DRM, the Mozilla implementation does not intentionally leak any information about the user’s system or its configuration to video services.