It's probably someone you know if they are stalking you like that. I'm not sure I understand why you want to track this person though. Why can't you just moderate your comments and delete anything that this person posts? You'll have a hard time tracking someone like that down.
If you get any threats, then I do suggest showing it to the police. You may be able to get microsoft or google involved to cancel the account, but the services are free and they would probably just sign up again. Also, because of the privacy policies in place, they may not be willing to help you at all.
It's probably someone you know if they are stalking you like that. I'm not sure I understand why you want to track this person though. Why can't you just moderate your comments and delete anything that this person posts? You'll have a hard time tracking someone like that down.
If you get any threats, then I do suggest showing it to the police. You may be able to get microsoft or google involved to cancel the account, but the services are free and they would probably just sign up again. Also, because of the privacy policies in place, they may not be willing to help you at all.