Oh, I should point out: the way the Tor network encrypts things in layers all the way through to hidden services makes it impossible to perform a man in the middle attack effectively. All they'd get is more encrypted data after they decrypted it -- maybe that'll put you at ease. If you're not on the clear net, I don't know of any way they can intercept what you send back & forth. Never heard of one, but I'm not a hacker, so that doesn't mean it doesn't exist. Just so rare you don't have to worry about it, even if it is out there :)