PG2 is always on and uses next to no CPU , In return when there are rubbish files out there they are often blocked and dont waste you bandwith on a file that you didn't need to start with(there were several companies uploading files that looked like movies & were normal size titled like a p2p file but never finished downloading and not even previewable)other than that its like religion if you believe it works your mind is at ease.
