Where's the Ouija board?

They spook,
they spy,
they look through one eye.

They peek,
they sneak,
while you're off on a leak.

But did you know,
they glow,
when they see what you show?

And did you know,
they smile,
after they've been here a while?

No,
not really, no,
but I wish they'd tell me so.

P.S.: Inspired by Gauri's comment on Old News V. Verbal diarrhoea, I think it's called. The only horn I'm blowing here is my own, undoubtedly. But then again, it's what I'm best at. ; )