Here is a comment that I made on another blog that I want to expand on:
By the extreme rule of secrecy, everything is oath-bound and nothing can ever be said (or written) unless the person you are talking to was involved in an intiation or ritual that you were physically present at.
In other words, anything that was ever secret is still considered oathbound. And nothing can ever be removed from the oathbound category once it was declared oathbound.
By the way, this means that not only were Israel Regardie and Aleister Crowley oathbreakers, but so was William Wynn Westcott and Samuel Liddell (MacGregor) Mathers...because they all wrote about things that at one time was covered under the secrecy oaths of a previous esoteric tradition or society.
This is the ultimate extreme of secrecy. It is the extreme rule that says that if you are involved in the esoteric, you never, ever talk about it in public. The only time you talk about the esoteric and oathbound material is behind closed doors with a guard outside.
This is a level of secrecy that no esoteric writer (or blogger) can actually uphold. You cannot even advertise your own esoteric society if you are obeying this extreme understanding of secrecy.
Therefore, I honestly do not know anyone who goes this extreme route...except for those who would like no one else to talk about the esoteric. These are typically students who think that they understand the real purpose of secrecy, and have missed the boat. I think that we have all dealt with these people at one time or another.
By the way, one of the weird things about this level of secrecy is that stuff that the esoteric traditions adapt and take into their system also becomes oathbound. For the instance, the Hebrew alphabet, invented for things like accounting, once taken into an esoteric system (Kabbalah) is now considered oathbound and secret. Therefore even the proper order of the Hebrew Alphabet cannot be discussed if you are an initiate of an extreme secrecy tradition without a guard at the door.
Basic math, the ability to start a fire, most mythology, color theory---all these subjects you have to quit talking about if you are a member of the extreme secrecy camp.
If you find this extreme level of secrecy silly, you are not alone. But just remember there are those students out there, who despite discovering the first hints of the esoteric traditions from books, who believe that this is the level of secrecy that the esoteric traditions have to adhere to.