FYI: http://leaningtech.com/duetto/examples/ is broken on OSX in Chrome and FF for me, it looks like a mobile page is served which makes the code examples unreadable. It looks good in Chrome on Windows7, but also broken in FF on Windows7. Haven't test other platforms.

Wow: and a minute after I typed this, my Windows machine gave me a blue screen, not sure if it's related but it's the first in years ;)