I noticed that when I put a facebook link, that link leads to a page with a lot of comments, most of which are spam.
I would suggest that you contact your web administrator as soon as possible and put both spam filters and some sort of human (not spam) verification be added to those who want to sign up or leave a comment.
David Isaacson commented
2017-01-25 11:04:35 -0800
Hi. Just found out about this group…sorry I apparently missed a meeting just last night. I hope the group is active and growing, and I look forward to possibly getting involved.