[Liskni_si]

I actually use those "useless" keys (back/forward in the browser) more often than PgUp/PgDown, as I usually scroll using the touchpad.

But it doesn't really matter, as long as the physical keys are there. They can be remapped.

[jpetso]

Never said they were useless! I also use them all the time. There is, however, only space for two extra keys in the holes of the four-arrow layout.