Site is hosted on 202.157.180.89:
http://www.dnsstuff.com/tools/whois....80.89&email=on
I would email a full list of details to
indra@webvisions.com and
abuse@webvisions.com and see if you can get their DC to remove/suspend the site.
In my experience, Singapore is one of the far eastern companies that actually tries to combat spam etc, so you might be in luck.
Alternatively, As the domain is held at godaddy, and they are renowned for suspending domains where it's been caught spamming etc, You could try contacting them.
Good luck!
Jee