If you haven't visited Chess Vibes (or if you don't subscribe to their blog) you might want to saunter over there to read of some preliminary results they have on their recent study of chess skills.
Nothing too surprising about the results, but the glimmer of hope is found in once sentence: "Some believe that almost everyone can get to FIDE master with enough practice and study."
"So you're telling me there's a chance."
Susan Polgar picked this up too
I liked this graph which is displayed on Susan's blog