WARNING: the software is not syncing offline changes: existing notes can be read offline, they can be changed offline, but with the next dropbox connection they are overwritten by the data in dropbox, so your offline changes are lost.
The notes are opened by default on Mac0SX with TextEdit, but TextEdit cannot handle the given text format correctly, special characters like äöüß are sooner or later displayed wrongly and then also wrongly overwritten on the iPod. Same with Microsoft Word. TextWrangler e.g. can handle the special characters properly.
There are some minor bugs I dont want to list here, too.
In principle the use of a note app via dropbox is a very good idea, but I will check out the alternatives or wait until this one is working properly.
xabeth about Nebulous Notes