"Guest" = unregistered user for purposes of the following. I'm seeking to understand the guest posting policy structure for this forum. There are many times I see a "Guest" with a post within a particular thread, and then other times I see a "Guest" attempting a post in a thread where their post never appears. Is there some criteria/restriction/review that must be passed for a guest to post as such in a thread, or is it simply that a "Guest" sometimes initiates a post that they do not finalize due to their own?