Microsoft doesn't even really want feedback from these builds. They are not for public release. They are all bug hunting issues, sent out to individual concerns and, as such, have not been thouroughly checked for other, more dangerous, faults. The individual organisations who receive the builds, have other methods of communication.
Microsoft certainly, under those circumstances, do not need all users of illegal downloads, telling them , for example, that desktop.ini opens on startup, or that a build cannot network to an XP machine!!