From their site:
iCompete.org is a completely free user-ran community website that collects a maintains a complete list of martial art, mma, and grappling tournaments, seminars and shows from all over the globe.
Users can have events delivered directly to the mailbox through subscriptions, track favorites, or post comments or questions directly to the event promoters. If you know of any event coming up in your local community sign up for a free account and add it to our system. http://icompete.org/
If you guys also want to put your events there. No I'm not affiliated with that site at all.