It works exactly the same as armbar in relation to posts and topics and what not.
All 'fight camps' are invite only and the commissioner can send invites out and bar people by the click of a button.
The biggest and by far best bit of the site is that all the events are already on there and all you need to do is select your winner, method and round. It is far easier than what we do on here plus nobody has to arrange a thing.
As well as earn points for correct predictions you also earn virtual dollars and you can bet these against each other or against the house odds. This opens up another league purely based on money earned.
Each season is roughly 10 events long then it starts over
Each fight camp has 4 separate competitions running at the same time;
1) primary predictions - all UFC events including fight night and on versus
2) primary wagers -all money won on above predictions
3) secondary predictions - strikeforce, dream, bellator etc (all non ZUFFA, well up until recently)
4) secondary wagers - all money won on above predictions
This is just a suggestion I am more than happy with the way this is run on here but I don't do any of the work. There's a good few of us on here who use to or still have mmaplayground accounts (me, 2brutal, Mryzyz, think p4p and sheldon too) and I'm sure they'd say the same about it. If you've not seen it then it's worth a look