I'm the expert at sniffing out the curry posts
Almost good English, almost on topic and relevant, and 1/2 the time will have either a direct or indirect link in the text body and/or footer.
you may also want to block the IP address.
Can also check this site
http://www.stopforumspam.com/I believe they offer a black list that somehow integrates with the forum software. I'm only a mod on the car forum, and the admins have provided us with a great 1-touch ban and block tool... but we have to be very careful and avoid using it on US based addresses.