One of the coolest features (I think) of Stardock.net sites are the referral links.

Some sites have "track back" but it's a long, painful, manual process.  On Stardock.net sites like JoeUser or WinCustomize or GalCiv.com ro whatever, if you link to a particular article, you can see your link and how many people came to it from your link via referrals. It's very cool.