In troubleshooting a robots.txt problem, it became known that case-sensitivity is an issue, which prompted me to write:
"I know I'm just a simple Windows boy, but I don't get the whole case thing... is it *really* an advantage to have both foo.ext and FOO.ext (and foO.ext and fOO.eXt etc. etc.) able to exist in the same folder? To me it's nothing but confusing -- and as my grandpappy used to say: "complexity begets error". And it causes extra keyboarding (*nix people have stronger SHIFT fingers, eh?), and extra confusion/effort when talking about files" 'eff oh capital-oh dot eee capital-ex tee'."