Not only does it stop the incessant dripping, it also makes making toast an excitingly dangerous adventure.
For a few cents more you could buy the fancier, more complex version. It's a little crazy though.
The real question is: what ISN'T it???
Actually, they should have, I was just being faucetious.
When washing your hands makes them dirtier than they were in the first place!
It can be really draining.