I was wondering how difficult would be to emulate the Conversations functionality for threads, into a specific forum? For example, I start a thread into a forum where only the thread starter (myself) and any administrator (Kier or Mike) can read its contents (presuming this option exist already?). After reading the thread content, Mike decides that Peggy (moderator, not allowed to read the threads of others) is more experienced and invite her into discussion. If you are an administrator (or whatever usergroup you decide to have "Conversation" permissions), the above mentioned option will allow you to invite other users into discussion. I think is very useful for people who want to emulate a ticketing system with a node.