Popular commenting platform Disqus is adding a big upgrade to its central dashboard today that makes the service feel much more like a social network — sort of like a Twitter for comments. For those who haven't used Disqus, the service lets you create one profile for all of your comments across any of the hundreds of thousands of sites that support it (we use it on TechCrunch). The Disqus Dashboard gives you a central hub to view all the discussions you've participated in, but until now it hasn't done such a great job helping you find your friends' comments, or letting you discover users that you may enjoy following. That's changing with today's update.