jmccormac - 3:13 pm on Jun 26, 2010 (gmt 0)
The stats are based on domain name counts from the zonefiles and the domain counts from the ccTLD registries. The .org was traditionally used for the backend of internet operations though it did see some use when the equivalent .com domain was not available. The .org was far more popular in website terms given its original use was for non-profit organisations. However the numbers of domains with websites are a fraction of the number of registered domain names.