title: Free Silverlight mapping with Bing maps and OpenStreetMap?
body: <p>I recently read <a href="http://pietschsoft.com/post/2009/11/13/Prototype_OpenStreetMap_Silverlight_Control_using_Bing_Maps_SDK_and_DeepEarth.aspx" rel="nofollow">this article</a>. Which uses the Silverlight Bing maps control to display map data from <a href="http://www.openstreetmap.org/" rel="nofollow">OpenStreetMap</a>.  In this article he extends <code>MapCore</code> and develops a true OpenStreetMap control which no longer requires you to use the Bing API key.</p>
  
  <p>My question is simple.  Does this solution constitute free Silverlight mapping for commercial projects or does the use of the Bing map control itself require licensing?</p>
  
  <p>Thanks in advance.</p>