I think we should migrate all new Tor questions over to the beta site to help out with the numbers a little. I suggest flagging all new questions tagged with tor for moderator attention.
If it currently is on topic here, let's not migrate existing questions over.
For new questions, the process should be the same as for other clashes (such as Astronomy, Space and Physics, or even for Security and Cryptography):
Will it get better answers here or on Tor.SE? If we think it will work there, mods can migrate it, but we only want to do that if it isn't getting any good answers here.