It's all one account across the whole site. If you check the users, you'll see most of them have zero posts--they're not posting on the forum. I've never used the forum and it's counting me as online when I look at a character sheet or another part of the site while I look at the members online list when logged out in an incognito window.A couple issues with this data
1 - it's measuring "Forum Statistics" not site statistics
"Forum statistics" and "site statistics" are the same thing.
Sure. You can use other methods if you just want to get an idea of the 'general traffic' to a site.2 - it's measuring registered users, not necessarily total users