Mozilla has launched an experimental add-on for Firefox browser named Collusion which would tell you the names of third party services tracking your activities online.
This Firefox extension would “show, in real time, how that data creates a spider-web of interaction between companies and other trackers”.
Not all tracking is bad. Many services rely on user data to provide relevant content and enhance your online experience. But most tracking happens without users’ consent and without their knowledge. That’s not okay. It should be you who decides when, how and if you want to be tracked. Collusion will be a powerful tool to help you do that.