RSS should be fixed, and let's get edumacated!
First off, my apologies if you've been getting RSS validation errors. Ben Poole sent me an email informing me of that problem, and I emailed Rocky and Joe asking if they had seen the same thing. To my pleasant surprise, Rocky had fixed that exact error yesterday! He sent me the code and I just applied it... Thanks!
Second, if you want some serious education for free, head over to MIT OpenCourseWare. This is incredible stuff! Thanks for passing on the link, Bas!