it is possible to add a tracker to Fluid Topics (for example, Google Analytics, Marketo, Piwik, and so on) by adding the following file:
/usr/local/afs7/Fluid-Topics/conf/$SERVICE_ID/$SERVICE_STATUS/public/custom.js
This file can only be used to add the JavaScript code corresponding to the tracker, as adding custom JavaScript code to the custom.js file may damage the proper functioning of Fluid Topics.
Fluid Topics will not be held responsible for any damage caused by adding custom JavaScript code in the custom.js file.