#5
The crackers that target open source systems tend to be actual crackers as opposed to script kiddies, and tend to not use their resources in obvious ways.
IMO, of course.
DM: "OKay, you round the corner, and entering the alleyway, you see two men standing on eachother's shoulders."
*silence at the table*
Player: "F#$% it, we're fighting Cirque de Soleil! Run for your life!"