Update software packages with RSS
Have you seen the WIX toolkit yet? WIX is an open source Microsoft project that allows you to create MSI packages using XML. Apparently this is how most of MS creates packages internally. There is a really good blog that explains many of the features that are currently available and will become available in the future. Check it out here: https://blogs.msdn.com/robmen/default.aspx
One the most interesting features of this toolset that is under development is the ability for applications to update themselves using RSS feeds. This is really funny to me because when I started getting into RSS about a year and a half ago, I thought why couldn't you use RSS to update your applications and even update your help file documentation real time on your client machines. Well it looks like they are working on doing just that. Check out the article on that feature here: https://blogs.msdn.com/robmen/archive/2005/11/08/490448.aspx
This is just entirely too cool of a concept. Imagine sending out an application in a Windows Vista environment that will install in elevated priveleges. When you need to send out an update, you can update your source one place and sign the update with a certificate that will allow the application to update itself with elevated rights. The client could then pull an RSS feed and download and install the update seemless to the end user.