IS there a way to manage permissions for individual articles?

I have an Area for FAQ articles which explain how the site works. The autolink for FAQ links to the FAQ area. The autolink is used across the site.

Some of the articles in the area are only intended for members.
Some of the articles are only intended for specific usergroups.
Articles like the rules and terms of Use are obviously intended for all users, including guests.

How can I manage this best?

Permissions can currently only be applied on an area-basis. You may want to put a couple of sub-areas below your main FAQ area. For example, "FAQ for All Users" and "FAQ for Paid Members"