Shane Greenstein writes to me:
This email is to alert you to a new blog project established by myself, Joshua Gans and Erik Brynjolffsson — www.digitopoly.org. We noticed that while there was plenty of commentary on technical issues there was, in fact, no blog exclusively devoted to the economics of the digital world. As we three blogged regularly about these, we decided to combine our efforts in this new forum. In addition to the new site we also have a Twitter feed @digitopoly.