Also, some stats were available on Bitcointalk Public information project (BPIP)
http://dev.martinlawrence.ca/bpip/ Currently this website isn't available, but according to message on website Vod are planning to launch new version soon.
The domain name is being changed also for vod's site.
Global forum stats are available on the forum stats page (which has recently been reenabled). It might go back down again though if Theymos considers the servers to be too unstable.