The Account page functions similarly to the Contact page. It displays a summary and details about the account selected. Accounts are saved in the iService database using the same structure as contacts, and have the same basic attributes. They can include a login/email and have their own history (for example, corresponding with and account at a generic address like support@example.com). Account properties are created and edited the same way as contact properties.
In a future release, you'll be able to associate your contacts with an account and see a summary of all interaction history for the account in one place. The account page in 9.13 has identical functionality to contacts.
The Account Summary Page