I created http://identicamap.com. This web app displays the Identi.ca public timeline on a Google Map with live updates. The app is GWT based. The backend is running on Tomcat 6 in a Linode VPS. In a separate thread, the dents from Identi.ca are received and stored in a MySQL table. The GWT app queries the database periodically for new dents with location information and displays them on the map.