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I'm exploring the idea of having an encrypted chat on all websites I visit. The chat could allow me to leave messages on the website for my friends, send hidden post on Facebook, chat with all people currently visiting a site in an chat room dedicated to the current domain ....

What do you think? What could be done?
Is it even possible to have a consistent connection (for non single pager sites)?

Forget everything I said, I just discovered the copy plain text button.

I doubt this is possible since they are returning images instead of text as result.