also, it takes a while to show your name in the 'Who's Online' box, but your smiley lights up in the threads, so others will notice.

And, sometimes I come back (after signing off) and it is showing me still online.

You can get more up to date info by clicking on the 'Who's Online'
and it takes you to a page that shows who's around and what everybody is looking at. This page updates every few minutes.

But the invisible people chose to go incognito..they are members not visitors and you only know when they are on line if they post something LOL