http://blogs.esri.com/Info/blogs/gisedcom/archive/2009/06/24/yes-you-can-create-mashups-using-esri-software.aspxHave a look at this cool demo, presented by Jack Dangermond and Jeremy Bartley, at the recent Where 2.0 conference in San Jose. The video resolution is rather poor, however you’ll get the idea. http://en.oreilly.com/where2009/public/schedule/detail/9102enCommunityServer 2.1 SP2 (Debug Build: 61120.2)