I'd like to have a few RSS feeds sent to my Kindle (via kindlefeeder.com if you're curious) but I can't think of blogs that consistently have articles on the longer side that are worth reading. I'm really just interested in reading things that are well-written and fascinating, and not news. I don't want to be kept up to date, just engaged with something that hasn't been thrown together haphazardly.

Any thoughts on what's worth checking out?