What Does It Mean to Make Disciples?

Jesus' last words to His followers was to go through life making disciples.  This is vital to the continuance or reproduction of disciples and of the church.  According to Jesus, everyone is suppose to be making disciples (Matthew 28:19-20).  In my experience, I find that very few people have even considered engaging in the activity of making disciples and even less who are doing it.  So, if Jesus' last words were for each of us to be making disciples, then we probably should know what it means to make disciples.  So I'm asking you for input on this, what does it mean to make disciples?