Earlier today we passed the milestone of 10,000 registered users on IT Conversations. Since most of our downloads come in anonymously through RSS and other mechanisms, there’s no way to be sure of the ratio of registered-to-non-registered listeners. But if the ratio is the same as that for those who download/stream through the site, our total active listenership (at least one download/stream per month) is between 80,000 and 100,000.