I don't know how smart they are spotting punters using e.g. TOR to log in - maybe it doesn't matter.
I used a VPN to log into my Facebook account and it got locked
Alot of the bigger sites now have ways of checking to see if you are using a VPN or TOR. For example, I accidentally left my VPN switched on when using Paypal to buy some stuff from a US website. My account immediately got locked and I had to go through a lot of security questions to be able to unlock it again.
I think a better thing to do would be to go to Google, type in 'My IP address' and make a note of it. Switch your Router off for an hour, switch it back on again, type 'My IP address' again and see if you have a new one. If you do, then you can make a new account on any site as the IP's no longer match.
Sky, for example, offer Dynamic IP and I can switch my IP at any time.