Once you have this off the ground for real, maybe invite the Riddler to apologize. Document that you have invited him. Contact the press and let them know the story. People in the area are going to have to network to find the right press and journalist/reporter.
Another thing... To get more than three people to events like this, you will have to reach more than just the survivors who come to the boards. People will have to start individually tracking down people they know from Straight. Someone should starting a mailing list, or a list-serve.