There are too many other social media groups that I can’t give an explanation for them but I do have the links https://www.twittercom/AmericanMensa/,
https://www.instagram.com/americanmensa/
,https://www.linkedin.com/company/americanmensa,
https://www.chess.com/club/chess-m-sig
https://www.pinterest.com/americanmensa/.
If you follow these links for most of them you would find a repleca of these for Mensa International except for Chess.com because it is Mensa International.
Northern New Jersey Mensa 