It's a nice concept, but the implementation is terrible. What you should aim for is something like twitter but stick it note themed. As is, it isn't just user unfriendly, but actively user hostile. You need something that is easier to use for people who aren't programming minded.
Forego all this html nonsense and just have people be able to type in a short note with a title. Perhaps give them a log in so that they're stick it notes aren't publicly available and are all available on one page. I do not want to go trawling through a list of unfriendly looking links for each damned note.
What you need to remember is that you are competing against actual stick-it notes here, so this has to be obscenely easy to use.
