It's not a product that tries to compete with Google Reader. Windows Live Reader, codenamed MSReadr, aggregates news about Windows Live products (mainly Live Search, Live Mail, OneCare) from the growing list of their blogs.
Nial Kennedy says "this project was created on a Sunday evening without the approval or blessing of Microsoft" using Planet feed aggregator.
Windows Live is Microsoft's response to Google's web applications and tries to be an online extension for Windows Vista.
Live Mail Desktop wants to be Gmail
Live.com is Vista's default homepage
Windows Live Mail review
Windows Live Toolbar shines
Windows Live is a big bet