Punctuation is not just a great friend of the copywriter and author. Designers and typographers have long valued the punctuation mark for its succinctness and beauty of form, bringing simplicity, clarity, homour and intelligence to design. This charming Print.Magazine gallery showcases a history of the question mark and exclamation mark in design through the years.

If you’re anything like me, you’ll grimace when Ian Wright ask contestants “what are yous going to do with the money?” or new Strictly judge Alesha Dixon gushes “you was moving around that floor…”

Or perhaps I’m being too picky? I could certainly forgive Alesha…

They’re by no means unique. Plenty of us make regular grammatical errors, in either our speech or writing, and they’re harmless enough. But what do clients make of them? And what are the subtle things you can do to refine what you’re writing or presenting to them?

Copyblogger is a really handy site that I check in on regularly, and it has a great article on how to avoid common errors.

The site’s recommended if you want to boost the power of your words online.