I was looking at my keyboard and I noticed that some keys have had the matt surface worn off them, and now they are shiny.
In order of shininess I have: Right end of the space bar; s; c; n; backspace; e; left shift; a; t; m; o; i; r; h; b; y; d; ctrl (left); >; ,; w
All the rest are not shiny. And I seem to have something icky stuck under the k key, and what looks like a dried drip of hot chocolate on the 7.
Definitely pretty pointless.