These people go and check out places people call in to be haunted *either because theyre worried or they are tired of thinking theyre crazy*
so they go in to try and disprove the haunting.
For example
"Ahh its so scary i just saw a black shadow"
"oh, its just this tarp sitting here"
but when they find stuff they cant explain, they put it under paranormal.
They RARELY call a house haunted.
So when they DO catch stuff, you know its real and not fake.
Its VERY cool.