General Discussion

How many are active, participating users is harder to pin down. If you look at the View count on any page of DU, you'll see that it's rare to see view counts for threads over about 2000. That's not an accurate figure, of course, because each time that thread goes to someone's screen, it is counted.

My guess about active, posting DUers comes to about 2500 on average. There are many others who only read threads and never post. Probably the owners of DU can come a lot closer, because they can probably see a count of how many unique visitors show up on any given day. I assume they could see that number, anyhow.

So, really the number of DUers is hard to come up with. I don't know. I'd like to think it's lots and lots, but there is that view count to keep in mind. That's my concept of how many are likely to see a post I make here. View counts are important if that's interesting to you.