mamamary, the rabid dog analogy works for me.
I've had a little bit of experience with this and at first I thought it was a harmless game. But, something kept tugging at me, saying that this wasn't as innocent as it seemed, so I quit.
Part of the danger of RV is that the person doing is opening her mind to the the object or place, waiting for images to be placed therein. In doing so, she is opening her mind to anything, including demonic influence. Demons can travel from one side of the world to another in the blink of an eye. They can be with the viewer, travel to the object she is trying to view, then return to the viewer--all within a heartbeat. The demon, having visited the object, can then place the image in the viewers mind. This is a gateway for them to enter the viewer at other times for other reasons. Remote Viewing can be a doorway leading to other occultic things.
Some people mentioned Padre Pio. Others mentioned cultivating the "gift" of RV-ing. Padre Pio did not have to cultivate his gift. God gave it to him--no practicing required. Padre Pio, from what I understand, did not choose to bi-locate or to see events unfold a world away. God brought Padre Pio to where He willed Him to go, and as far as we know, the good father didn't ask to be sent to these places. Padre Pio was sent by God, for the Glory of God.
In Remote Viewing, the viewer is not doing it for the glory of god, but out of curiousity or for the glory of his/herself.