It’ll be interesting to see if Google (or Yahoo!) follows Microsoft’s lead in this context
Now, a "what's new" feed on a personalized Windows Live home page (and within other Live services) will update you when someone in your self-selected network has posted a new photo, added a comment or written a blog entry on any Web service partnered with Microsoft.
From there, you can go directly to that service to fully experience, for example, viewing photos in Flickr, Yahoo's photo-sharing site.
Microsoft has signed up 50 partners, including major Web properties such as Amazon.com, Twitter and Wordpress.
Microsoft has changed other elements of the Live suite, including expanding the free storage on its SkyDrive service to 25 gigabytes and adding a "people tagging" feature to its Live Photos service.