1.List Scroll with Items as Image/Description from web - Bing Image Search Experiment
延迟加载，优化滑动性能
http://blogs.msdn.com/b/rohantha/archive/2010/09/12/silverlight-wp7-list-scroll-with-items-as-image-description-from-web-bing-image-search.aspx
2. WebClient的线程BUG被修复了，以前是不管从什么线程进入总会在UI线程返回，现在是什么线程进入就从什么线程返回。
http://blogs.msdn.com/b/slmperf/archive/2011/06/21/webclient-change-for-mango-how-it-impacts-your-application.aspx
3. ListBox性能
http://blogs.msdn.com/b/slmperf/archive/2010/10/06/silverlight-for-windows-phone-7-listbox-scroll-performance.aspx
4.数据虚拟化
http://blogs.msdn.com/b/ptorr/archive/2010/08/16/virtualizing-data-in-windows-phone-7-silverlight-applications.aspx