Email adjacent users with a chat room link, say what this is about (you were identified as being similar, maybe you have similar interests) Email random users

Email adjacent users with a chat room link, say what this is about (you were identified as being similar, maybe you have similar interests) Email random users (control group) the same Ask after a month who's still in touch I'd participate but please send me some of each group and don't tell me which is which :D