The Bubble Chart is part of the Silverlight toolkit and is available for Silverlight 2 and Silverlight 3 at http://silverlight.codeplex... This chart uses the size of the “bubbles” to display more data. For this article I used the Silverlight 3 version of the toolkit and the newly released Expression Blend 3 and Silverlight 3. Creating the Chart Start by creating a new Silverlight 3 project in Expression Blend. Add a reference to the Silverlight toolkit by going to Project in the menu and click...