I'm using User Specific Content to specify user groups and Facebook Connect for login/registration.
My problem is that any new user is automatically assigned to ALL groups, including the most confidential ones. The root problem seems to be in the WordPress settings where I specify that any new user will be a "subscriber" and this is all of my User Groups are "subscribers" since I only have readers, not authors or contributors, etc.
Is there any setting where I can tweak this? Most wordpress admins will have infinitely more readers than writers. There's little point in having a tool that limits content by user group if every new user is by default added to ALL of them.