There are moments in life you never forever, defining moments, and others that might not seem so important at the time, but shape the person you'll become.
Post an important (or not so important) moment from your characters life. Others will reply, having suddenly been transported from present time to the point of your character's post. Will they spill the secrets of the future? Will they try to alter the past? Or will they allow this to transpire as it must? Can the past be changed?