And about 350 of them will be purged from the list by this time next year.
I'd easily have over 10,000 members but I always purge old accounts that were never used after a while. The current list up to those that joined before 1/1/09 have either at least one post or visited within the last 6 months. So the current list up to that date is active members.
Weird but I have a lot of members with 0 posts and have logged in. Some of them quite old, there's one from Nov of 06 with 0 posts and was just here the other day. I'll assume most of them join to use the topic reply notifications.