And yet one of the strongest points in this community is the generalized mindset that control is bad, censorship is bad and what we really need is a self adjusting market/community.
The Forum, however, is a different beast, as it is the "face" of the community and some of the oldest/most active members are doing what they can to keep it clean(ish) without crossing the border of dictatorship. It's a fine line, I can tell you that.
So everything within reason is tolerated and even encouraged, but exactly what "within reason" means is open for discussion. I don't think there's any harm in giving you or your "students" (a friend of mine was cheating on his wife... right!
) the publicity needed here, but be prepared to be removed/blocked/censored if you cross the line of what most will consider acceptable, which in itself is a moving target as the community grows.
Rule of thumb? There's nothing wrong in advertising "illegal", as that is an artificial externally imposed concept anyway, and will depend on where you live on top of that. But if you feel the it is "immoral" for as subjective as it might be you'll be better off doing that somewhere else