Layering privacy onto Facebook pages

Can't say I expected to see this, but I'm impressed by the ingenuity.

Someone's written a chrome extension that encrypts and decrypts the content of messages on a Facebook group, but only if:

• the person viewing the group has the appropriate extension for chrome
• they have the correct crypto key shared within the group (outside of Facebook, natch)

All anyone else see if they don't have the correct key is a load of jumbled text like so:

But if they have the key, their browser presents it as:

Interesting how identity and privacy protection is pushed into the browser, to allow for somewhat secure communication on an otherwise compromised platform - you get the network effects of Facebook, without having to trust the network.

Found via Plugged.in