An add-on domain is a new domain that is added on top of your main domain. It creates a sub directory within your
main web hosting directory but can show a different web site.
Add-on domain benefits.
1. Create multiple domains/websites on the same web hosting account.
2. Save money and web space by using one hosting account instead of several hosting accounts.
3. The add-on domain shares all the same resources (disk space, bandwidth...) with your main site.
4. The add-on domain has its own FTP manager, site stats, cgi-bin which is created automatically.
5. Promote several web sites within one hosting account with their own set of keywords.