Thanks for the note igehhh. I concur:
You're welcome!
1. A lot of spam posts not just in discussion but in ANN threads. It's quite clear who posts with any meaningful understanding and who doesn't, I would even say it's quite clear who actually gambles and who doesn't (it's gambling isn't it?)
Most of the ANN uses bumps pay services it's very easy to detects the sheep's from the goats but that's topic for another day right.

Because many campaigns also discourage mega thread posting if not outlaw them, you get the spammers opening new topics -- you see this a lot in Discussion but also creeping up in the main Gambling thread. Low quality content, no new discussion or angle, etc.
You are right, I have about 20+ already on my list that needs to be locked as they contribute to nothing but spams. I will release the list in my next topic and let the admin decide.
I agree that threads I opened could probably be turned to self-moderated (you named one but I have others also attracting spam) -- I don't mind moderating, though I might be accused of being too harsh, and could be biased to all the users I already know gamble (but that bias is good right?).
Quick solution; lock and create a self-moderated one? Saves time.
JollyGood's self moderation's a good example of how one could trim the fat, although I have to say at least one was opened despite existing ones -- should really have kept the existing topics (using the example of Champions League and EPL you used in OP) and moderate that together with others (is that possible?). Was there a reason JollyGood opened those new topics? To self-moderate?
I didn't understand the first question and as for the second question, Yes I think the high level of spams on the other mega-thread led him to create a new self-moderated thread for the same league.