TaeKwonDood writes: "Worried that your impish college antics could come back to haunt you in a job interview? A new University of Washington plug-in for Firefox says it can cause your online content to "self-destruct", keeping your errant emails and/or web cam videos from falling into the wrong hands. The hook? Encryption needs a key and, for security purposes, even the user does not have it. So they use the miracle of worldwide P2P, though how well it works will soon be found out."