Number of members isn't really much of an indicator, we'd have overtaken them ages ago if we didn't have occasional purges and delete spam registrations by the hundreds.
I can't see how to sort JBK's membership listing by date last active, but I just had a look at our own and it seems we've got almost 1900 members who have logged on at least once in the last month.
I think that's pretty damned impressive :thumb:
Edit: 18 registered users currently online on JBK, 32 here.