These days, whenever I see (or worse still, find myself using) a noun phrase consisting of an acronym followed by a word beginning with the acronym's last letter, part of my brain twitches uncomfortably in a ‘PIN number’ sort of way – even if the last word represented by the acronym isn't the same as the following word.

I'm also beginning to feel a reflexive flash of irritation on seeing the word ‘it's’, even in many circumstances where it's being used correctly.

Subconsciouses are irritating things.