Write on any webpage

Diigo.com is a new service which allows anyone to

• Write on any webpage
• Interact on any webpage

It is like adding sticky notes on any page. Granted there are many other services available, including one from Google called Notebook, this one adds many new features. For example, your sticky notes can be private or public, meaning you and others can share each others notes on any web page. You can send your sticky notes to your blog, email, etc. with a few clicks. I think it is worth thinking about how one could use such a service to build another unique service. I can't tell you what I am thinking about, so think about it.