Perhaps this is because certain IP addresses used to access your account match that of someone else of particular interest.
Did you put a 1 pixile sized image in your signature in order to track that?
How would you know the IP addresses of those who log in? Unless you are an alt of admin/mod. (That would be fucking nuts if quickseller was an alt of theymos)
Obviously he's just making it up as he often does. Can we please ignore the trolls.