One of the biggest pluses would be the personality aspect. You can interview and hire someone with a stellar resume and great interview skills, however you cannot truly know their personality until you work with them, and personality is one of the things that can make or break a working relationship. As the article touched upon, you often better know the strengths and weaknesses of those closest to you. This allows you to find the best fit for someone's personality and skills, which benefits everyone. Additionally, your friends and family are likely to give their absolute best effort because they're not just a part of your business, they're a part of your life. That's not always the case I know, as I'm sure we've all heard horror stories of friends and family who have taken advantage of such opportunities. But implementing the steps outlined would aid in preventing such situations, or in remedying them quickly should they arise.