I don't belong to a paranormal group, but if I did, I don't know that I would be in favor of shooing a spirit off to another plane. Of course, there would certainly be exceptions. If it were the spirit of a child, lost for eternity -- yes, I would certainly try to get it to move on and perhaps join loved ones waiting on the other side. If it were the spirit of someone who was "searching" for a lost love, spouse, family member etc..., once again yes, I'd like to think they should be helped in their search. However, in cases where a spirit is inhabiting a place because of some sort of attachment to the area, my philosophy would probably be to let them stay. Great question!