Single sign-on across Manila sites?

[Scott Granneman]

So I'm looking through the documentation online, and I found this at 
http://manilanewbies.userland.com/usersguide/membershipprefs/urls :

"The URLs settings are used only when you want to share Membership
between Manila sites. This is an advanced feature that requires Frontier
scripting of the Manila servers to make it work. Unless you have
Frontier access to both servers and an understanding of how the
Membership system works in Frontier, these URLs should not be changed."

As I understand this, if you become a member at www.abc.com, you can
also automatically become a member at www.def.com (assuming everything
is set up correctly). I have two questions: 

1. Are Frontier scripts making this possible available anywhere? I'd
love to see them. 

2. Does the ability to share membership across sites mean single sign-on
across sites? In other words, if I sign in as a member at abc.com, & I
then head over to def.com, am I already logged in at def.com?

Thanks!

Scott

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R. Scott Granneman
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