The NatickFOSS group uses gettogether.community instead of
meetup.com. I don't know that it has gotten us any visibility but the software is open source. I've been tempted to join meetup to go to Boston Indie Game Developer meetings but have so far held off.
The NatickFOSS group also gets a booth at the Science on State Street event at Framingham State. It is a free STEM activity fair for kids. My job at the event is to generally occupy the time of the kids so the other members talk to the parents. First year I had a playstation controller hooked up to my laptop and held it out to any kid that walked by. Last year I brought the arcade machine assembled by my son's cub scout den. Any idea if WPI does any thing similar? Even if it is something only for WPI students it might be useful to alert people to the group's existence.