Hello. I was wondering if posts in Off-topic sub-forum are not counted in to total posts? If they are not - I'm wondering why? Because I think you still get the signature shown there to the same BitcoinTalk.org members that use Bitcoin in general..
Just address your question to the main thread.
https://bitcointalk.org/index.php?topic=5188047.0.
And this is the last update from yahoo regarding your concern,
I have no idea what boards they are paying for and what boards they are not. I can ask them when they login next but that may be Monday or later.