violets, i really don't think that you are in the dark ages at all -- i also have been educated that each of the things that you mentioned is esoteric -- not to be talked about with anyone not initiated unless depending on the situation they are about to be initiated... including clothing, which it seems is often talked about on here... the fact that we have diamond days leading up to initiation isn't a secret, i think we're fairly proud of diamond days, but the activities that we do are not open to the public, they are for the sisters... and we don't discuss much of it outside the sorority...
when it comes to recruitment, i think the basics, what the pnm's are exposed to (like the fact that we do songs, a skit, etc), is not necessarily esoteric, but the planning that takes place, the way we as sisters work on the other side, dealing with recruitment and our philosophy of it, as well of course as any... other stuff is not for anyone else to be concerned with, other than to know that the way our recruitment selection is structured is meant to be a positive experience, and does not embody the stereotypical sororities/fraternities "vote" or "blackball" or whatnot...
having discretion about what is made public about the sisterhood is smart.... it keeps what makes us special, special to only us! i know on an online forum it can be very relaxed.... we have a tap system for standards that was started last year when we're out... one tap on the shoulder means take it slow, watch yourself, two means hey you're treading a thin line, and three taps means, hey you fell of the proverbial wagon here, maybe you need to seriously watch your actions/stop what you're doing/go home... i think this is done out of concern for the sister and wanting to make sure she doesn't do something she would regret, and in the end will be better for having someone watch her back for her... if i saw a sister online being loose with info i wouldn't hesitate to pm her and i would take a pm reminding me of discretion to heart and be glad of it i think.
anyways i dont' know if any of the immediate above was on topic or is just a tangent ..... ok i'm leaving now load of work, yay

pi lovin,
~jenaya