In today's increasingly interconnected world, virtual meetings have become a staple of business practice. Unsurprisingly, so has the digital interview. Physical distance between potential employers and job-seekers is no longer the impediment it once was for face-to-face engagement. In the past year alone, the number of people who use Skype for this purpose has risen from about 300 million to more than 405 million, with a whopping 66-percent increase in users who log in from their mobile devices. These numbers point to one simple fact: you need 'The Essential Digital Interview Handbook.'