Yesterday we implemented a referral tracking system that I believe will be a great little tool. When another website links directly to your article the URL that the link is coming from will be saved into our database and you will be able to reference those url's. At the bottom of each article next to the comments you will notice a new link like (Referrals 3).

The number represents the number of unique referrals to your article. Clicking on the Referrals link will display a list of the top referring url's to your article. IMHO, this is much better than the TrackBack system as it will show you all the links coming to your article. It will be most interesting to learn where external links to your article are coming from.
(Click here to see a sample)

Right now we are tracking referrals from search engines but we will probably filter those out so the content of the referral system is from actual sources talking about your article. And I am sure we will make some tweaks to this as we go but as you can see this will be a great little feature to help see who else is talking about your articles