[QUOTE] Tap it lightly on the side and politely ask the data to leave
This isn't exactly aimed at someone with 1 or 2 HDD's that he/she feels the urge to destroy.
For large companies that are replacing a large number of computers, etc, just tossing them in the trash isn't an option if you can have someone going through it, take the HDD and read the data on it. That data, in the wrong hands(or right hands, depending on your point of view), can do allot of damage to that company.
Using a program to repeatedly write 0 on it takes to long and might still not be a sure thing. Having someone manually destroy them also takes to long and depending on the methods used is also not a sure thing. HDD can take allot of damage before they become unreadable. Magnets, fire, scratching them, etc is not enough. Having a machine that destroys every HDD you put in it in a couple of seconds will become a good option, when you have to destroy allot of HDD's.
And this is not something that most company's have, they usually hire another company to destroy all there hard copy and digital data for them. For a company like that being able to destroy allot of HDD's in a short amount of time is there way of making money.