An easy interim fix would be to create a Google Calendar, either add all the current organizers and add contact info on how to be added to the "How to start a meetup" page, or publicly distribute a LW account's login info, and then embed the calender in the sidebar, presumably somewhere between the info on your account and the recent comments segment; clicking on the embed can bring you to the actual calender. Google Calendars can be publicly viewable, so the details for each event can then include a link to the relevant Google group, where discussions can occur until the final solution is decided on and implemented.