It appears that the MPAA writes memoes to the FCC on behalf of the powerful Senate Commerce Committee chairman Fritz Hollings.
How do I know this? Because last year, Hollings sent a letter to Chairman Powell urging him to open proceedings into the apocalyptically stupid Broadcast Flag, and the memo was released as a Word file.
Word files contain tons of metadata about their creation and revision, including things like the name of the person to whom the version of Word used to create the document was registered, which is how we busted Hollings. NTK sometimes pulls apart the Word-based press-releases coming out of the UK government and shows how the New Labor taskmasters are rewriting (and upbraiding) the Old Labour bureaucrats who produce the initial drafts.
After years and years of this sort of humiliation, MSFT has finally gotten wise and shipped the "Remove Hidden Data" add-in for Office XP/2003, which "you can use to remove personal or hidden data that might not be immediately apparent when you view the document in your Microsoft Office application."
Of course, the "add-in" only cover a couple recent flavors of Office and doesn't work on the Mac, so for the rest of us, there's still a pretty good reason not to use Word for any sensitive electronic document dissemenation.
And, of course, it remains to be seen whether the "Remove Hidden-Data" function actually removes all the hidden data — MSFT has devoted so much engineering to obfuscating its file format to lock out competitors from shipping a compatible word-processor, there's really no good way to evaluate this claim.