There are lots of reasons to desire privacy while web browsing: Facebook stalking, fetish porn, buying a Jonas Brothers album without anyone making fun of you. Normally the only way to ensure complete privacy while browsing the web is to
poke your roommate’s eyes out wait until no one is around. However there is a way to enjoy privacy regardless of who is in the room (or still has working eyeballs). You can remove the polarized film from your LCD monitor and use it to create special glasses. Without that polarized film the contents of the monitor won’t be visible to the naked eye, but with your “magic” polarized film glasses, you’ll be able to see it just fine. Check out the complete tutorial on Instructables.