When setting up an event, in the Tell A Friend tab there is a Info Page Link. What is the purpose of that link? It does not store that information in the event table so I do not think it is even used.
The tell a friend information is stored in another table called
civicrm_tell_friend. The help text for the
Info Page Link says -
A link to this Event Information page is automatically included in the email sent to friends. If you ALSO want to include a link providing general information about your organization, enter that link here (e.g http://www.example.org/)
So basically its purpose should be to include an additional link(eg your organization) along with the message you send to the contacts from
Tell a Friend form.