We wrote Notespark in the summer of 2008, back in the days when there was no good note syncing solution for the iPhone.
Unfortunately, we have reached the point where we feel like we can no longer do a good job of supporting the service. It's difficult for us and doesn't serve your needs either.
We plan on shutting down the Notespark service on December 31, 2013. After this date, your notes will no longer be available for syncing or viewing.
We recommend that you export your notes and import them into an alternative product, such as Evernote, which is free, or one of the many Dropbox-based notes apps (e.g., Notesy, Nebulous, Write, PlainText).