A reasonable suggestion and one I've considered a while ago. The only issue is that many people who are religious about their Muay Thai will mark everything as Muay Thai even if it's a K-1 rules bout or similar rules bout. It would be like pissing to mark their territory. As a moderator, I would have to fix the threads that are tagged incorrectly.

Still, I think there could be some usefulness to adding filters of various kinds to Ax. I have ideas just like this in my future plans for Ax, as well as regional filters (US, England, Australia, Canada, etc) and various other options. I wish I could show you guys the next Ax interface design mockups, but I don't want to spoil anything.

I'm chipping away at improving my web development knowledge all the time while I work on those Ax plans in my spare time. Andras used to be involved in Ax development, but he's not any longer. Last year's Ax redesign was done 100% by me and I occasionally spend time working on the next version of Ax. Things are happening slowly, but they are happening. My progress will only speed up over time. A few years from now, I expect Ax will be very different than it is today.