It's actually hosted on Wordpress.com. I've posted the URL yesterday to their abuse form requesting it to be taken down, but currently remains active. I guess they need time to process it.
Not much info about him on this blog, but tons of it on me. I'm not sure how much good a German lawyer template will do if he's operating in Middle East.
Thanks for the advice. I have his original IPs, and then a second list of Proxy sites which he used to create fake accounts and also post abusive posts (I had IP-banned him). Presently, the forum is locked down to new registrations until I can find a way to stop this guy from coming back.
I don't have his physical address, so not sure how I could get a letter delivered. Perhaps some kind of tool exists to bait him into giving me his geo coordinates?
The supervisors are not too pleased with getting 10-15 emails this morning, with a PDF of my personal information and other harrassing information related to my work for the site, which takes place off-work.