Your Identity is the most important thing in your life! When you purchase a domain name, you have to give your personal information such as : name, address, phone number, email. Those informations come available on the web to anyone that want to know who is the owner of a domain name, using sites like whois.com.
But you can put those information not visible to web users when signing up to ID Protect.
You can add ID protect to your domain name when you purchase it. .ca domain name allow you to choose if you want your information visible or not without paying for any additional service.
Some business such as Domain Registry of Canada, use those information to send you solicitation notice to renew or transfer your domain name with them. The send you a letter by mail saying that it’s time to renew your domain. Thinking your are doing the right thing, you renew with them instead or renewing with multi-hosting.ca.