When surfing online we know that we leave traces of our browsing, sources and influences. The filter bubble makes our results more similar to what we expect, and these two things are connected. Precisely, what information is collected? And by whom? How detrimental is it? How can we use the information we want, without it being tailor-made for us? How much is the business model of information portals complicit with this spread tracking? All these questions will be answered, and solutions provided.