We talk a lot about culture around here, obviously.  We talk about what makes great culture, and where building great culture starts.  We really suggest thinking about culture as early as when you are an individual founder seeking a partner.  One of the biggest reasons why startups fail, often, has to do with their team.  Think about it this way, when you are building a company and the entire company is only made up of five people, when one person is gone, then technically 20% of the company is gone.  When one of your team members doesn’t get along with others, the result is the same.  You lose 20% of your company.  Identifying good culture vs bad culture is so easy especially with smaller teams.  When it’s bad, your productivity drops, efficiency, organization, communication, and more.  Your whole business suffers.