Virtual Earth has a great api, better than Google Maps IMHO, but JavaScript is PITA if you have no editor support. VS2008 has brought Intellisense to many JavaScript scenarios, but not to VE development - up until now that is. A Code Plex project (that I had the pleasure to be involved in, though in a tiny tiny way, because the project was completed so quickly! - I expect to be more involved in future iterations) has made it easy to have JavaScript Intellisense for VE in Visual Studio. The Virtual Earth: An Evangelist's Blog has a good...