I also have an account on the Undercroft as well as here on LttD. Like Magister Nemo I feel that these two mediums of communication are more Satanically exclusive and superior to that of Facebook. But alas, the vast majority of users have migrated to FB and now seldom haunt this old lair as they once did.
Quite honestly, if you are looking to interact with a much greater number of like minded individuals, you would get more mileage from the CoS unofficial FB group:https://www.facebook.com/groups/thechurchofsatan/
Just a suggestion.
"The difference between the man or woman who's a practicing Satanist, from an identity Satanist is that the practicing Satanist looks at the picture, while the identity Satanist studies the frame."
-- Anton Szandor LaVey
"Anyone without a sense of humor is too pretentious to be a good magician."
-- Anton Szandor LaVeyLife EverlastingWorld Without End