Like any good egomaniacal blogger, I check my referrers fairly often. It's interesting to see where people are coming from. For my blog, I get a few referrals from other peoples' blogs, and a lot of traffic from people Googling for information on DirectX - hopefully they like my tutorial series when they wind up here. And yes, I'm still writing it - just a bit busy at the moment.
Anyway, I noticed a few days ago that I'm starting to see a new thing in my referrer list. As you can see for yourself, there are now a number of entries like "Hidden referrer" and "undefined". I have no idea where these are coming from - but then again blogreading software is sprouting like mushrooms, so maybe one of the new ones sends this when someone gets referred to a page.
Really, it's too bad: I give information away for free, and in return I get to find out where you came from. I won't stop writing, but it does make it slightly less interesting for me.