One suspects (one=me) that the invisible people are the ones who think it's pathetic to spend the amount of they do here so they don't want to admit to it. Which makes them doubly pathetic, as it also suggests they worry too much about what other people think of them.

Also, maybe the peeps who have different identities, to make it less obvious that one only comes on when another disappears.

"Shelle, your mind works like a beautiful train wreck."