Virtual Postit Notes

I have an idea for virtual post it notes, where someone can scribble notes on their iPad or other device and easily upload them to their account in my multisite network. Does anyone have any suggestions on how to set this up? Would it work? Would the notes be submitted as a new post?

And to take to the next level, what about a collaborative are where multiple people can scribble and add their ideas to the post it note, or post it notes idea network?

This would also tie into an idea management system. I noticed there are some WP plugins for idea management. Anyone have any experience or suggestions?

Has anyone tried Leave-a-Note Visual commenting system plugin?

Here is another possibility:

Here is an iphone app. Does anyone know if this would work with WPMU, somehow submitting the notes to the network?

And here is an app for scribble notes