BST - "Users online" indicated, must be affected by something to do with a BB lag .. your green light is currently on .. showing that you're online .. but you're not showing in the "users online" list, even with a page refresh ..
Ahhhh .. NOW you've appeared .. after about 5 minutes .. there must be a default period in the BB which only shows you online, after say, 5 mins .. to avoid showing those who just pop in and out, in curiosity, for a minute or two ..
Another annoyance here, is postings that are edited .. and don't show they've been edited .. unless you put in a reason ..
On another similar forum, the BB shows editing having been done, even if you don't put up a reason ..