With these three, we are already up to SCORES of social media contacts. If we could get folks here to all list their clubs, the social media "contact footprint" would be tremendous, and have lots of potential to reach a LOT of people, quickly. This would have to be used and utilized wisely, however, for it to be effective. Maybe even do a test or trial run of getting word/notices out. I don't do much of Facebook, but am slightly familiar with how it works, so someone else who does do Facebook would have to take this on from here.
Edit: I added some, with info to help others sift/search. It does no good spamming public groups, so please only work with groups you have actual contact with.