Some years ago, I found myself newly installed as one of two creative directors hired by the fundraising agency, Cascaid. It had recently moved from Reading to London and was determined to become a major player on the London scene (which it did).

Not that long ago, if you wanted to make a personal approach to someone, you wrote them a letter.

There’s nothing quite like a letter. It makes you feel special. It sounds as if it knows you, about things you’ve done, places you may have been, things you care about.

When I look at my Twitter-stream, I find that there are some people whose tweets regularly stand out. They offer a beguiling mix of information and wit that burst onto my screen like verbal fireworks. Beautifully formed thoughts that give the impression of having just rolled effortlessly off the keyboard.