John at Transylvanian Dutch has found that the Cook County Vital Records site is now live.
I just purchased and downloaded a marriage certificate a few minutes ago. The site is fairly easy to use. One minor complaint: wild card searches aren't an option. Instead, soundex is supported. (Why? The Missouri State Archives has shown how to make an effective search tool that isn't overly complicated.) Not a big deal, though. This site will likely become hugely popular and, hopefully, this shows other counties that digitization projects can and should be done.
Great find, John!