I think some of the members who joined a long time ago are still around - reading posts - but just never feel like posting for some reason. I really like posting. It's not so much that I have a question, but I just like the conversations, seeing what other people are doing around the world, and sharing what's going on in my life. Since it's a beekeeping forum, most of my posts will be about beekeeping - unless it's winter like now. :)
That's my only answer concerning why there are so few members who contribute. Even though their not contributing, I believe they still come by and read stuff.