Looks interesting and useful.
One concern I have is what happens if the uberNote servers go away, either through mishap or (no offense) if you guys go out of business. I looked through the demo but couldn't find any means of exporting or downloading to a local drive.
How would one go about making an offline backup of their notes?
Also, much of what I store as "notes" includes embedded binary data such as bitmaps and document files. Often times I'll start a document in MS Word and drop external objects in there, including other Word docs or Excel spreadsheets.
How does uberNote handle that?