The old artblog.net, so I have been told, ran into technological difficulties which forced Einspruch to close it down and then re-open it in its present form, where comments only appear after he has had a chance to vet them. Link & Bannard believe they have licked the problems that afflicted the earlier Einspruch blog, thanks to Disqus, a relatively new (estab. 2007) service that will enable readers to post their comments immediately & without similar technological problems (though still monitored by Link & Bannard to exclude obscenities, hate mail, and other material too offensive to print).
I hope my readers will check out both artcrit.org and artblog.net. As I see it, each has its virtues (and shortcomings).