So if you use em and /em instead of i and /i (which I have just done there), that means that a voice reader used by someone who can't see too well will show the emphasis. That's useful information, and I'll try doing it in future. Thanks Sminky.

And that's an example of how someone asking a question here (even if maybe a search could possibly have found the answer) can have the effect of providing other people with helpful information.