DESCRIPTION:
While preparing for Shanghai (as requested by someone in the audience), Andy McKee broke a string and began talking about his tour in Asia while restringing. Towards the end of the video he explains why the frets on his guitar are crooked, a question a lot of people are wondering. Basically, the fanned frets on his new Greenfield guitar are both comfortable ergonomically and provide more accurate intonation.

And although he doesn't mention it in this video, fan frets handle dropped tunings much better than regular frets do (and since Andy plays in so many different alternate tunings, fanned frets must be a dream come true). Thicker strings are naturally designed for a wider scale length - I would say all guitars should be built this way, and for a lot of handmade instruments with more than 6 strings, they are mandatory.

You can see him play Shanghai in the next video, linked below:
http://www.youtube.com/watch?v=uuUeAwnTYzA&fmt=18