Word of Mouth

Why do people always want to "improve" your English? Michael Rosen investigates the phenomenom of the "style guide" and asks whether all the advice that's given is helpful or accurate. He asks why some people take a strong dislike to adjectives and adverbs, and wonders whether, as Reader's Digest says, it really does pay to enrich your word power. (Or should that be "Readers' Digest?").