I think those graphs might be incorrect because, if I remember correctly, a lot of users were deleted several years ago. At the time there were problems with the forum crashing, and it was suggested that everyone who had no posts? less than five posts? be deleted to increase the speed of the forum. This worked remarkably well.
See remarks above. The discrepancy is with DDoS attacks, and the server problems ha to do with this plus the hosting IIRC. While deleting non-posting members was discussed, it did not happen. As I’ve outlined, there remains over 9k members with zero posts, many of them members since 2012 or 2013. About 2/3rds of the total members have less than five posts.
It actually did happen. Was a couple years ago, don't remember when. The deletions were based on people with no posts AND who hadn't logged in in a certain time frame (1 year? 2 maybe?). This was to avoid deleting accounts of people who logged in to lurk, but not post. The accounts with 0 posts now must have been newly created since then, or at the time had been on recently enough to not be deleted.
The forum in question is linked to a podcast that started airing in late 2016, and is high quality enough to have been recommended in two recent major media outlet articles on diverse voices in the personal finance space (NYT and Forbes). It isn't hard to find if that is something you are interested in. I think the fact that the person who runs it has never actively recruited people from here speaks to their integrity and demonstrates that they never intended to poach people from this community.
Can you give us anything more to go on?
Oh My Dollar.
The quality and contributions of its founder, and the people who post there now, are top notch. In particular, there were a group of ladies (Oro, MJ, GDog, Ducky, Happier@H, planejane, and many more) that add a lot of spirit and amazing energy.
It is sad not hearing them over here any more, but I completely get the desire to be in a smaller group with more compatible opinions. The forums back in 2013-2014 were much different than they are today, for example.
I personally would enjoy myself much more over there in terms of social aspects, if I had time for any forums these days. Alas, with three kids, time is limited, and my participation there, here, or anywhere, is pretty low.