The problem is that it's difficult to say if that's a lucky guess, a book reader being sloppy, or someone deliberately trying to spoil things while pretending that they haven't read the books. I think that one is out in the wild now (honestly, the less said about it, the better at this point), but I'll try and see if there's a something that can be done long term.
In the meantime, I can't stress enough that book readers need to stop posting over there. I understand the temptation, but any posts over there by book readers enable other people to go by later and use the "well, everyone else is posting here already" excuse. It's great to see some lively conversation over there now from non-book readers, but I hate seeing them continually bothered and spoiled by people from this thread.
Please stop posting in that thread if you've read the books. If you want to comment on how entertained you are by their speculation, do it in this thread.