If you didn't have the bleed then it would look horrible, trust me. I am using a Saitek Eclipse II keyboard on my desktop to type now, and it is designed to have the bleed between the buttons so in the dark you can clearly see the size of each key, and the relation between the keys etc. If you have tried a backlit keyboard where there is no bleed then...it's just awful. It's hard to explain but it really doesn't seem comfortable as you just see black with a load of coloured letters and numbers all over the place. You can't judge how big each key is, or where it really is.