The Soapbox on MSN Video TeamThanks for helping us test the Soapbox on MSN Video beta – we’ve really appreciated the feedback we’ve gotten from our user community about the service. In order to grow and implement some important new features , Soapbox temporarily requires you to login using your Windows Live ID before you can watch or upload videos. If you don’t have a Soapbox account, we’ll be opening the doors again very soon with some cool new stuff to try. Thanks for your patience as we continue to build the best place to “make your statement” on the web.The Soapbox on MSN Video Team

The simple answer is, is that because of copyright infringment on MSN Soapbox, it’s cutting off all new users on the service and will only let existing beta testers access the website. Who knows when it’ll be back - could be a few days, a week or two, maybe even months. MSN Soapbox Mobile still works though.