It lets you browse The Code Project directly in Visual Studio 2005. When you click on a link that would normally download a ZIP file, it asks you instead if you'd like to open the sample up using the Code Project Browser. If you say yes, the add-in will download the file, unzip it to a base My documents\My Code Project Samples directory and then load it directly. It also provides a sidebar where you can view, reload and delete all of the projects you've downloaded. Finally, it allows you to keep Code Project favorites, just like any respectable web browser would.