StackOverflow client written in WPF and C# that can notify you of new posts for tags that you've marked interesting on the actual website.Works by directly logging you in to the website instead of just monitoring the rss feeds. This is a code sample but can be used to write a full fledged client.
For details visit http://overroot.com/blog/2010/05/how-to-write-a-stackoverflow-desktop-client-in-c-and-wpf Read more: Codeplex
For details visit http://overroot.com/blog/2010/05/how-to-write-a-stackoverflow-desktop-client-in-c-and-wpf Read more: Codeplex