If you assume that Facebook will comply with whatever entity you&#x27;re trying to avoid, by using Onion, it sounds like a pretty bad idea to me, yes. In theory you could probably use a separate browser and Tor session for Facebook, and for your other browsing - making it a little harder to associate your Facebook login with your Tor session (ip). Sounds like a terrible idea, though.<p>Now, for some of the reasons why you&#x27;d want to use Facebook via Tor, it might not matter much - using Facebook might be bad enough (eg: it could be considered subverting state censorship) -- so if Facebook is already colluding with your adversary, just having a Facebook account might be enough to give you problems.<p>It might be enough for a legal veneer of plausible deny-ability, although I doubt it: Eg, perhaps you&#x27;re a drone pilot and you login to Facebook via Tor, and paste in a gpg-encrypted, ascii-armored text-message to a journalist on Facebook. You could claim someone must&#x27;ve hacked your account. Or you could collude with someone else, and &quot;borrow&quot; their account. I don&#x27;t think it&#x27;d keep you out prison though.