OK, enough with the Internet-connected refrigerator already. That appliance is becoming a reality, what with Samsung and its smart fridge. But it also leaves a lot to be desired as an example of the Internet of Things, the idea that network connections will spread to anything with a power cord and even to a lot of things without one. The big problem: convincing you that you might actually want one. It's no coincidence the Internet-connected fridge has been a tech industry joke for years.