The letters on your computer keyboard are wearing off, or they already have but that's okay because you have learned to touch-type.
Doesn't only happen to fanfic writers. I need to type a lot of stuff for other purposes, and, well, my E and R are as good as gone from my keyboard. The H, I and G miss about half of themselves. S, L, N, U, C and V are about 25% gone. And, of course, you can't only see, but actually feel where I always hit the space bar. There's this very shiny and smooth spot on its right... Then again, I did learn typing during my last years at school.
And even my 10-year-old daughter knows where to find which key - even without any kind of typing class.
