It's a constant re-occurring question as to finding out who has visited your Facebook page.
The only system that can keep track of this information is the Facebook page itself - plugins and apps are not able to perform this type of tracking and so if you find a third party system that claims to provide a LinkedIn style list, it should be considered to be bogus. The intention could either be to get as many visitors (page hits) as possible or to do something nasty, such as gain control of your account.
