Now you can track what your friends have been up to, and have people you don't know suggested as friends.
If you own an Xbox One you will notice that the Activity Feed is pretty much a direct copy of the same feature from the console (and the SmartGlass App). The Activity Feed allows you to track your friend's activity, which shows you achievements, GameDVR clips and more.
The Suggested Friends feature can be found under the 'Friends' tab on the website, it sits next to 'Recent Players'. On my own Suggested Friends list it only appears to show popular broadcasters, a 'Hit Clip Creator' here and there, plus Major Nelson. I would have thought it may show friends of friends, but that doesn't appear to be the case.