Bryce, anyone with a brain (course criminal + brain = unlikely) could check the forum, get a location, then stalk one or more members. Even just use it as a chance for targets to pick off one by one in the future. I'm not being overly paranoid here, I have crossed paths with some very nasty people, but I'm lucky to be on their good side.
People work in very horrible ways.
I think that the general meet thing should be public, ie city name, rough date, and vague plan. all the final details should be private.