Learn about Windows PowerShell
Summary: Use Windows PowerShell to cast an RSS feed to an XML document.
How can you navigate an RSS feed as if it was an XML document by using Windows PowerShell?
When retrieving an RSS feed, ensure that you cast it to an XML document by using the [xml] type accelerator:
[xml]$hsg = Invoke-WebRequest http://blogs.technet.com/b/heyscriptingguy/atom.aspx