They might know that it's you, actually. I spoke with a facebook employee recently and they apparently spend quite a bit of effort identifying likely duplicate

They might know that it's you, actually. I spoke with a facebook employee recently and they apparently spend quite a bit of effort identifying likely duplicate accounts. Usually people make several accounts to have more farmville neighbors, so you may not get lumped in this category, but who knows. Google does the same thing - I believe there was a post here recently about an interview where an employee said their was a console matching accounts and likely duplicate accounts the person has.