Koen Lefever writes: In Brussels, the process between the Privacy Committee of the Belgian Federal government and Facebook has started today. The committee thinks that Facebook needs to be clearer about which data it collects and what it does with it. The so-called 'social plug-ins', 'cookies' and 'pixels' are technologies that allow Facebook to monitor surfing behaviour. According to the Privacy Committee, Facebook still too often collects data without the user being aware of it. According to the Privacy Committee, Facebook also tracks people who do not have a Facebook profile via certain cookies.