Users are more likely to calm down and actually share their concern when they can navigate easily and type their input into just one text box.

FORBES: When Mobile Shoppers Get Mad, Don't Just Leave Them Your Number

So is the cardboard-box industry, as its basic input, used cardboard, is now in short supply.

ECONOMIST: The rising price of cardboard

Sony, for its part, is working to make that secondary display massively more appealing -- the company's latest generation of high-end camcorders adds an HDMI input, with an option to display content from any compatible source (a full-size adapter ships in the box).

ENGADGET: Sony Handycam PJ790V and PJ650V get brighter projectors with HDMI input, we go hands-on