Someone created something he calls a do-hyki, similar to a Wiki: "A simple (wiki-like) collaborative note-taking application for small groups, which uses Groove, and runs in a Web browser. This should be of interest as an example of what you can do with Groove Web Services (and developers will just love the crinkly code). You might even find it useful." Here's a screenshot of what this app looks like. Similar to what I'm trying to do with Paper Airplane