Access Control Lists in Drupal?
I've been trying to figure out a workable solution for a couple of months, and have come up with nothing more than some hacks and approximations of what is needed.
Here's a use case:
User "A" (let's call her "Amy") writes a blog post. She wants it to be readable by her professor (let's call her "Betty") and one other student (let's call her "Carmen").
But, she doesn't want the post to be readable by the rest of the class, by students in other classes, nor by the unwashed masses stumbling across a post via Google.

