Seems to be a fairly new website about grappling tournaments. It looks like OnTheMat.com is associated with them along with USA Grappling and World Grappling Games.

Here is a list of some upcoming tournaments taken from GrapplingTournaments.com

2007 Tournament Schedule

OTM Brazilian Jiu Jitsu Championship – Long Beach Convention Center – July 28th 2007
US Open of Submission Grappling – Long Beach Convention Center – July 29th 2007
Mr Olympia Grappling Championships – Las Vegas, NV – September 28th & 29th 2007
3rd Western Regionals – Portland, OR – October 14th 2007
Disney World Martial Arts Festival Grappling Championship Orlando, FL – October 28th & 29th 2007 –
7th American International Championships – November 11th 2007
California State Championships – December 2007