You're right; there are MANY more guests that members. To the members:

Thank you for contributing, and making this one of the best sites out there!!! To the guests........

What gives? you read how much fun we have here - join up!!!
We are a relatively young site, though. only about ~2 years now.
I would hope, eventually for a 50/50 guest to member ratio. That would indicate a VERY healthy site. But we're doing pretty darn well as it is.
I have noticed, fwiw, that the average amount of members online is up at least 200% from a year ago. I remember when there used to be ~10 members on. And now it's rare to see less than 30 people on at a time (except late at night).