Hey there, just to let you know I achieved to communicate those small and pretty jewels of Copyleft Hardware , and I have in mind some fun with them in no so distant future.
Howto and Video demonstration on http://www.tuxbrain.com/en/content/arduinoben-nanonote-howto-video-clip-p
Also translated to spanish 
For those inpatients 
here is the direct link to the video
Arduino+NanoNote serial communication demo - YouTube
See ya.
Couldn't you install "Screen" and use that to view serial data, and keep the whole screen? This thing could be really cool hooked up to an xBee or some kind of cheap 433Mhz transmitter or something as a super-micro interface device for all your hacking needs.
Screen is installed by default on NanoNote, and yes you can use whole screen and open several sessions instead of spliting like I did.
In fact is basically a GNU/Linux machine so once you are in shell it can do pretty the same as any other Linux
Next steps I that are added to my long TODO list is porting the avr toolchain to be able to compile and upload programs directly form NanoNote, but be patience due it will take me some time to figure out how to do so..., if anyone have experience in crosscompiling , openWRT, avr toolchain, compilation without Arduino IDE or is just interested and want to help you can join us at http://en.qi-hardware.com/wiki/Main_Page community
Very cool. I couldn't tell by the tutorial, can you leave the battery in and get to the serial pads? Also, are any of those other pads in the device useful for anything? It seems like a cool little device.
Meanwhile you use thin enough cables, yes you can put the battery and the cover again. you can take a look at http://en.qi-hardware.com/wiki/Serial_console#Hardware_mod_to_have_a_pluggable_serial_port to see how I done a plugable serial port.
The other two pads are also the same serial port but was not active in the last u-boot release, they will on next release of the bootloader and will avoid the current serial/keyboard interference mentioned on the video. But be aware than this pads are very close to each other so good soldering skills (or good luck at first try in my case :P) is required to avoid to bind them together