Tell the person that the nature of the business is related to selling .ws domain names which include hosting, a site builder, and email accounts. That .ws is becoming the next .com domain extension.  You can say the business involves introducing other clients to .ws domain and hosting package and that they earn commission for every person that signs up for their own personal or business website.  That for $10 a month they are getting a website package and an income generating business as well. They get Two things for one price.