The does not always work on all pages. It is possible to check for yourself whether or not your page is being tracked, but doing so requires a little more effort and technical knowledge.

You will need to use a browser that has support for tracking the web requests it makes. Chrome, Safari, IE 9, and Firefox 4+ have this feature. Older versions of Firefox can also track requests, but you must have the Firebug extension installed.

On any page that is being tracked, the following requests occur when you visit the page:

User script
A request will be made for a script with a URL similar to
//dnn506yrbagrg.cloudfront.net/pages/scripts/0000/0000.js

Tracking script
The user script will initiate a request for one of the following

//trk.cetrk.com/t.js
//trk.cetrk.com/tu.js

On SSL-encrypted pages it will instead make a request for one of these

https://s3.amazonaws.com/trk.cetrk.com/t.js
https://s3.amazonaws.com/trk.cetrk.com/tu.js

Clicks and scroll events
The tracking script will make requests for these files as you click or scroll up and down the page

//trk.cetrk.com/c
//trk.cetrk.com/s

From SSL-encrypted pages, clicking and scrolling will instead result in requests to the following

https://s3.amazonaws.com/trk.cetrk.com/c
https://s3.amazonaws.com/trk.cetrk.com/s