The latest Netcraft survey is more interesting than usual, because it reports a drop in the total number of registered domain names, as well as a decreasing number of sites reachable overall by the survey. It's been a traumatic year in the tech world, but the drop in domain names goes back to domain name buy-ups of 1999 (and looks like it will accelerate the same way domain speculation did in 2000). All is not gloom, though, and the number of registered domain names is not the same as the number of active sites. The Netcraft site points out that "as domains bought for speculative reasons are abandoned, we can expect a higher proportion of sites to be active." Read the rest of the survey report for more interesting information on the state of the domain world.
http://www.netcraft.com/survey/