I wouldn't mind asking my customers to refer my business to their friends and family. I see nothing wrong in doing it because I know my business can be useful to their friends and family too. The focus is on my products, if they are good to my customers, they will refer it regularly to their friends.Referrals system in business is always very good because they make it quite easy to sell your business product and services without much need to work on the customers. The job have already been carried out for your business by the customers who referred anyone to your business.