Remember when Unilever scrapped its traditional Sunlight dishwashing liquid bottle and replaced it with an upside-down one with a nozzle that dispensed a specific amount of the green stuff?

It was back in 2004, and I remember it well, mainly because there was huge public outcry about it – consumers hated not being able to control the amount dispensed, some said it leaked, and many complained that as it emptied it became very hard to squeeze.

The manufacturer relented and brought the old bottle back...