[Seadweller]

I had this question a while ago when I bought my '98 Boxster, but forgot it until a recent post reminded me. The guy I bought the car from used to put a box fan on wheels under the engine when he parked it in the garage after a drive. I never asked him why, but I'm curious, is there something wrong with letting the engine cool naturally, or does rolling the fan under the engine have a demonstrable benefit?