I love reading the "extras" that come with a story should an author want to share them with the reader. Maybe you should try rthstewart's method of posting that stuff here, either in one long post with cut tags to mark different things or post them as multiple posts. It's easier this way so those who aren't interested in reading them can skip over it, rather than include everything as author's/end notes in your story.

As for betas, if you can't find anyone else, I can try to help you with that; the only other person I've volunteered to beta for has been Ruth.