It's basically a 'next-door' dimension, just a knock away.

People encounter them more often then you might think...sometimes they pretend to be stars or they just sit in lightbulbs and you can't tell until you see them wriggling like some kind of microbial organism...

You cannot let their lack of appendages fool you though as they are very perceptive beings and their judgement of human character is unsurpassed. They can see every past and future self walk through you at the speed of light and thus it can be hard to change their subjective emotions towards people...

Mainly they perceive rather than interact. They like to be orbs. I don't know why. Maybe that one guy knows.