Hi. I am not sure how you based your number of Online Users compared to number of Members. But I can tell you that we have a dating site (not using UNA) on a dedicated server. We have close to 300,000 registered members. However, at any given time we have about 15,000 active members, meaning members who have logged in in the last 30 days. Of those 15,000 active members we can count on a minimum of 500 to login daily and ranging up to about 1200 logging in on many days. Based on that I think your estimates are low as to Online Users by at least half. I also suggest that you rework this based on Active Members and ignore total membership. But I recognize that it also depends on what service the membership site provides. So this is just a thought.