We are a social animal. That doesn't exactly demand a psych degree to figure out. Yet we're also a private one; there's a little of the Gollum about us, clutching close our "precious" secrets and inside-knowledge. It's no surprise that one of the recurring entries on the periodic "top ten ways to annoy people on social networks" lists is the "mysterious update." You know the sort: "Big changes afoot…" or "Oh ffs, not again!" leaving readers curious and goggle-eyed (you hope) or simply frustrated (more likely) over what exactly it is in your interesting, exciting life that you're teasing about today.