The last post under Binary options category is almost a year ago. Is binary option discussions & sharing trades intending to educate banned here.
Infact, binary trading education can be used to trade all forms of trading.
Is it ok to share Journals on BO here?
I’ve seen no suggestion that binary discussion is banned here, but either @Pipstradamus or @Penelopip would be the person to clarify that (I’ve tagged them for you, there, and my guess is that one of them will reply).
Regarding your comment about “no posts for a year,” I think what happened is that in this forum, as in others, the members gradually wised up to the three irrefutable realities of the subject -
Binaries are increasingly being made illegal in several countries for valid and good reasons;
Binary options’ regulation left a lot to be desired, by comparison with other forms of trading (even by comparison with CFDs, and that’s saying something!);
In the most important and relevant senses, it’s become academic whether retail traders can actually trade binary options profitably or not, because even if they can, people now understand that anything you can do with binaries you can do much more easily, far more safely and with overwhelmingly lower effective dealing-costs and better odds by trading with other vehicles, i.e. by not using binaries, which stack the deck against the retail customer to a huge extent.
Why not? Binary trading can be a viable option just like any other investment, provided you have the right knowledge.
There is NO ban against discussing binary options. Discuss away! 
@pink_hat_trader makes great points about why they aren’t popular with the community here. Also, trading binary options in the US comes with more barriers to entry than trading retail fx, as far as brokers and exchanges are concerned.