Outlook and Outlook Web App can display RSS/Atom feeds.
There’s apparently no way to add feeds from within OWA. So you’ll have to have Outlook set-up for your account for this to work. But once they’re added in Outlook they then appear in OWA.
I had another complication however: I have multiple Exchange accounts. It seems that one can only add Feeds to the primary exchange account but I wanted it in one of the other accounts.
So I added it to the primary and then tried to drag it into the RSS folder in the other account. However no go! (Two error messages.) Then I waited and tried again just in case it was still synchronising. But again it failed.
The solution? Copy the feed of course. Moving it didn’t work but creating a copy in the second account did work. Yay!
Ohh and for double fun, to get a Facebook Page’s timeline as a feed use a URL like the following: http://www.facebook.com/feeds/page.php?format=rss20&id=147477388635837 See e.g. http://stackoverflow.com/questions/13020897/official-facebook-rss-feed-for-a-page