This software is a browser extension for Internet Explorer, and allows integration with the Warichu service. With Warichu you can create various types of virtual sticky note and attach them to Web pages. Whenever you go back to that page, your note will appear - and if you send the note to some friends it will appear on the page for them too. Warichu is also a social bookmarking system that allows everyone to discuss the Web content. You can think of the situation as being similar to that of an ant colony mapping out the terrain it lives in - all the ants investigate here and there, finding useful resources, remembering the details and telling their friends so they can use the resources too. In this analogy the Web is the terrain, and we are the ants. We communicate on a layer that overlays the Web - a layer just for collaborative communication of information. That layer is the Warichu.