I'm coming down with a migraine, so this is prolly not gonna be as good of a post as it should be, but here goes
So if you haven't figured it out, yeah, I have access to an outside communication method. Said method is an anonymous chat room, in which there are 7 members, but we use character names as opposed to usernames. So not only do we not have confirmation of each others alignments, unlike Masons, but we also have very little idea as to who we are talking to. This is the reason why I mentioned earlier that KyryK could be in a three person discussion thingy, but likely wouldn't know who his partners were. I know my group very quickly decided that we shouldn't reveal names or roles, for fear of a traitor amongst us.
That all being said, having some idea of who was in a group and who isn't gives some small form of solidarity. Yes, we can't entirely trust everyone in the group, but we can likely trust most of the people in the group. Plus, this allows for crossreferencing scumslips here vs. what someone may say in the chat room.
That being said, and this should go without mentioning but ima do so anyways, if you think this is a good idea and want to go for it, for the love of god don't say who you are in chat, nor claim your actual role in any way, shape, or form. That gives scum too much info, but just saying yeah, I have access to outside communication, really doesn't give much away.