Martinus,
I'll add a few cents here. Since I'm not active in SL and have no reason to be at the moment (too too darn many other obligations of my time) I'll out it in another perspective. Say you ahd a good friend locally that was a brother. he invited you to attend a dinenr that his lodge was holding you now have some access to teh lodge maybe the hwole buidling ona tour of the facialities or simply the dining area you will be exposed to soem fo teh secrets but as a non memeber you would ahve no clue to the true meanings of them by brothers. You'd feel somewhat uncomfortable though knowing that they may be secret signs and such when in reality they are no different to brethren than any other aid to memory. Here where I work they implemented new comuter passwords and to help folks try to remember the form and function they suggested using aids to memory not to unlike what we've been taught in lodge! At any rate there are any number of public functions where the lodge building and the lodge room are open to the public and we always encourage folks with any curiosity to tour the building and ask questions. thsi means that the paintings & such and symbols that are permanently affixed are viewable to the public so I feel that something suimilar to this in SL or cybersapce if done respectfully & tastefully can be and is a fitting tribute to Freemasonry. I'm proud to show off the lodge rooms and the building where I am a member I can see folks being the same way about a cyber lodge space.