membership authentication on Facebook logged in users
<p>I just got my login with facebook functionality to work, but its only client side. and its placed on  masterpage. </p>

<p>Problem i got is: </p>

<p>On website each user have their own user Profile page. but i need to be able to see if some one who enter mywebsite.com/User/UserName is actualy owner of a profile, or is a visitor.</p>

<p>With someone who is loged in by Membership authentication, their is no problem, i can just call current user, but facebook login is whole different story. </p>

<p>How can i use membership authentication on Facebook logged in users?  </p>

<p>and bonus question, is it smart to actualy have user name in URl, or is it better to have userGuid?</p>
