Is there a definition of an "active user" here, and, if so, are there statistics available, either on an individual or global basis, about how many still participate?
I've been rummaging through unanswered questions, looking for anything about which I might have some insight, and I couldn't help but notice that some of the older questions were from people with very low scores and almost no badges. I can well understand that being active may well be an on and off thing. But I would think that even occasional participation would slowly nudge up the scores.
Not every site is a good match, and it makes sense that people drift away. Interests also change. There's no blame attached. It's just an unfortunate aspect of the Internet that it is easier to silently vanish. Or maybe not so unfortunate.
I would still offer an answer to any question I could. But I have to wonder if low-score people from long ago are ever coming back.
Clearly, this isn't something confined to here. It's just a place I've quickly come to care about.