1. Add the Sailthru Javascript – See Personalization Engine Setup. If you are using Site Personalization Manager, see SPM Implementation.
2. Data Collection – An existing user browses your site without logging in. The cookie sailthru_cid collects data regarding their visit.
3. Pass Information – When the user is signing up, include the cookie in the User API call to create a new user profile. For example:

   {
       "id":"example@example.com",
       "cookies":
           {
               "sailthru_content":"U9JEVqLefidFAAAA"
           }
   }

   user POST (JSON)

Notes:

• In the examples above, the value of id can be anything. For example: a cell phone number, an email address, or some other identification number.
• The sailthru_cid cookie is associated with the Horizon legacy JS. sailthru_content is the correct cookie to use.

Once a new user’s profile is created, their profiles may appear barren. This is because profiles require a minimum interest score to display their interest tags. Rest assured: the data exists, it will start to populate when the minimum number of interest data (at least 3 views per content item) is stored.