You know the comments on Google Docs word processing documents? And how it creates a little discussion over in the right-hand margin?
I love it. Great for collaboration. I want to free it from Google Docs so I can use it with clients to discuss mock-ups or scaffolded websites.
Searching Google for "add comments [or discussions] to any website" only gets you results for adding blog-like comments (Disqus, JS-Kit, etc.)
Anyone know of a solution for what I'm after here?