Yahoo! announced a "new integration launching to all users that enables you to view, comment, and like your Facebook news feed items – all right from Yahoo! Mail. Facebook activity from your friends will now appear in your Updates section, alongside your friends' activity on Yahoo!, Twitter, Flickr and so on. Now you can get all your Updates in one place, right when you log in to Yahoo! Mail. Just like on Facebook, you can Comment or Like a news feed item right from Yahoo! Mail, and of course, comment goes back to Facebook so others can see it right away.
By default, we show both Yahoo! and Facebook items intermingled, but you can filter – All Updates, only Yahoo!, only Facebook – by clicking on that tab. Not only that, regardless of what tab you're on, anytime you get a new update on Yahoo! or Facebook, you get notified via "Show More Updates" button without having to refresh your browser," noted Yahoo!..