It doesn't matter who's gonna read it / see it / use it. It doesn't matter whether it'll spread anywhere or not; it doesn't matter how many people it will reach. That is none of your concern.
Your duty is to put what you know, out there, in a manner/form/medium that can be taken, copied by anyone who wants to.
Let someone else worry about taking it further. It will reach wherever it is destined to reach. Your duty is to let it go and set it free.