First and employees to understand the position of work are doing what. After that, it is to talk about where they eat and live, what they do after work, from which you can learn about the usual expenses, and deduce their income about how much. They will also reveal their views on the company.
Or before the interview to the company's neighborhood to ask the people nearby, such as janitors, security guards, the owner of a small store nagging, this information is more objective and real, with this handful of information to go in for an interview with the psychological bottom. Everything must be experienced to know, is the most real.
Personal experience for reference, said their own point of view. After all, I'm not in your environment inevitably some places think wrong, said not right.