WWFM III Flash Mob EVENT! 10:00 AM on the 10th of May Be a part of Geocaching History at the World Wide Flash Mob Event III (WWFM III) Seoul, Korea A "Flash Mob" is a Gathering of Geocachers. You MUST be present and sign a log sheet DURING this time to claim the event. This event is part of the WWFM (World Wide Flash Mob coordinated events) How long? exactly 15 minutes, not one second longer. When? 10:00 AM on Saturday, ..