The admins at Bitcointalk should have several IP addresses from Satoshi, because the IPs are saved in the logs. They are in the Database somewhere!
Why not revealing them?
If theymos reveal such information then it turns out that he can reveal anyones location if he'd liked too.Instead on getting praises on such revealing act,there would
really be those people that oppose when it comes to privacy matters.IP log tracing is possible but as said Satoshi do make use of VPN so its still pointless.
I think Satoshi have foreseen that this is going to happen in the future, he has kept his privacy successfully on many cases, I'm pretty sure he knows that he can be traced using an IP so he is likely used a vpn and a TOR to log here, he started the privacy thing, right, so he is a master of it.