[BrouteMinou]

9 fingers... Not 10, 9.

[johnnyanmac]

I use both my thumbs on the spacebar to assert dominance on every word.

But now I'm curious, which thumb do most people use on a keyboard?

[devsda]

My spacebar(s) are very smooth and shiny on the right compared to left.

[Izkata]

By the same measure, looks like I use my left thumb by far the most. I'm left-handed.