This is a decent overview of IRM and how it affects your documents.
Information Rights Management (IRM) technology in Microsoft® Office 2003 helps to give organizations greater control of their sensitive information. IRM is a persistent file-level technology from Microsoft that allows the user to specify permission for who can access and use documents or e-mail messages, and it helps to prevent sensitive information from being printed, forwarded, or copied by unauthorized individuals. If permission for a document or message is restricted by using this technology, the usage restrictions travel with the document or e-mail message as part of the contents of the file.
Overview of Information Rights Management - Office 2003 Resource Kit - Microsoft Office
Yeah Live Spaces blogs are shutting down. Anyone using Live Spaces should plan on migrating. I am moving to SharePoint 2010.
Upgrading a Windows Live Spaces blog to WordPress.com
There are 30 million people who are actively using Windows Live Spaces and have been eagerly awaiting the next set of new blogging features. For these customers, Windows Live and WordPress.com have worked together to build a simple way to move your blog posts, comments, and integrated photos right over to WordPress.com and start taking advantage of all their new features. And we’ll also redirect all your old Spaces URLs to your new blog, so you don’t lose any visitors along the way.
WordPress.com and Windows Live partnering together and providing an upgrade for 30 million Windows Live Spaces customers