Dice are already marked. They have pips or numbers on them. Opposite sides add up to the number of sides on a dice plus 1. So if the number 1 was on the bottom, number 6 would be on top.

Granted, this works for some dice, like d6, d8, d12 and d20. d10 are odd/even, and equal out to one less then the total number of sides. So 2 and 7 are opposites.

d4s are usually easy enough, but depend on the type you get. The one I have has the number on the top, and the number doesn't appear on the bottom.

Basically, the point is, most die follow a set of rules for number placement. If you can read the bottom of the dice, you can easily tell what number is opposite of it.

"Why not advertise based on what makes slackware different from the rest than taunting the software that everyone else has?"

Because the people that know Slackware already know what makes it different, and those that don't probably should stay away.

I guess the question is: Why advertise what we already know?