'The advertisement is brief, almost cryptic: ‘Ron’s Cleaning. SAPOL registered. Fully equipped. Reasonable rates, twenty years’ experience.’ It sits alongside three other more flourishing, colourful and elaborately designed offers awaiting a click of the mouse to reveal their wonders. A quick random choice from these three reveals a well-known, thoroughly commercial outfit. I decide — for no reason that I could clearly detail — to ring Ron.' (Introduction)