Two questions: (1) What was the peak membership for this site and when was it achieved?(2) What is the current membership?
I don't know anything about the peak membership. but a suggestion is to go to the members search function and open up all the parameters regardless of gender and age excetera to the least restrictive. that should be everybody. then it's just how many pages x how many are on a page.
By peak membership I'd have to assume you mean peak online at any one time. Highest I've ever seen it is close to 450, which was summer of '18 when it was routinly in the high 300 - low 400 range. Dont have a screenshot of that, though.
My peak membership, I meant the highest number of people who were members of Agnostic.com, not the highest number online at any one time.