If you use the latest version of Chrome for browsing the web on your Apple iMac or MacBook, you will have noticed a new icon in the menu bar, a bell icon which is used to access notifications and Google Now. When Chrome is running, and it doesn't have to be on the screen, it can be minimised, clicking this icon will display a notifications panel that is similar to what you would see on an Android phone. Is it useful? Do you need it?