Leh'd and how!
The best way to protect your car or truck from dents and door dings is by installing a professional grade body side molding. You can also protect other areas of the vehicle in the same way with wheel well molding and door edge guards.i really donno how its called. but its not on the bumper. and question was to is it practically helpful as i am about to put one...
now that you mentioned bumper, i might have to buy those strip on bumper (on corners)
Body side moldings are usually strips of rubber or vinyl that attach horizontally to the side of your vehicle. By installing them down the center of the door this rubber strip usually protects you from another door hitting yours. Usually the moulding will stick out farther than the body of the vehicle itself, so if someone swings their door into the side of your car it will hit the body side molding first. They usually come in black, chrome and there are some colors available as well.
Source: somewhere on the internet. Lost the link now!