Anything vinyl typically goes in the vinyl thread, but hey, I'm not a moderator.
I think some of the older forum threads caused issues with certain apps when they got very long, so newer threads were created. Doesn't seem to be an issue on PC. I try and add to the latest one but for some forum members the old threads can show up first and they get added to. The only thing I would really discourage is cross posting, especially when there are multiple images attached. It can make other posts more difficult to access.