A question was recently asked in the forums about logging client-side Silverlight exceptions on the server-side? Of course, my first guess would be to create code that would trap exceptions and call out to a web service for logging purposes. But why do that when someone has already done all the work for you? Daniel Vaughan has developed Clog (Client Logging) a customizable logging system for Silverlight. You can read all of the details about Clog in his article on CodeProject. Enjoy!