I really like what you are doing, but after seeing what happened to RailsCasts I am a worried what will happen to this business model once it hits 400+ episodes. Hopefully your "other plans" have this part worked out?
I assume the screencast has a limited shelf life, so yes, my "other plans" are about that. Although at this point, I think the problem is more about organizing the content so it's not overwhelming. I'm not worried about running out of material or burning out, at least not for a while.