http://blogs.msdn.com/b/expression/archive/2006/01/31/521207.aspxHave you checked out Amir's and Peter's Flickr Browser sample yet? This post has a reminder of how to get your own API key so that the sample can run and then it digs into some of the theory of how the sample works. The sample connects to the Flickr Weben-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/expression/archive/2006/01/31/521207.aspx#523929Fri, 03 Feb 2006 12:52:13 GMT91d46819-8472-40ad-a661-2c78acb4018c:523929Mike SteelPlease please please PLEASE tell me that &quot;SmoothMove&quot; will also be used in Vista in Windows Explorer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=523929" width="1" height="1">http://blogs.msdn.com/b/expression/archive/2006/01/31/521207.aspx#522402Wed, 01 Feb 2006 23:17:21 GMT91d46819-8472-40ad-a661-2c78acb4018c:522402The Expression Designers: Graphic, Interactive, WebThe mechanics of the custom classes which provide smarts to the Flickr Browser sample were described...<img src="http://blogs.msdn.com/aggbug.aspx?PostID=522402" width="1" height="1">