It's no secret that social networks need to collect as much information about us as they can. They use multiple algorithms, and every day they optimize their artificial intelligence platforms a little further. However, some of the decisions these algorithms make can be very strange. In the case of Facebook, a relatively hidden section of our profile helps us see what our "supposed" tastes are.
Just by visiting the Web you are sharing information. Unless you take extreme precautions, the average webpage determines both the region you are connecting from and your preferred browser through the "user agent". Of course, both elements can be modified to hide your real data, but this is just a simple example. In social networks, information collection is much more profound for one reason: advertising. Basically, the idea is to tailor the ads the platform shows to the content you are interested in, in an attempt to increase the chances of a theoretical purchase. Facebook is no stranger to this, but thanks to a special section in your profile, you can see the conclusions the social network has reached regarding your preferences.
That section isn't exactly exposed, but getting there only takes a few clicks. First, go to "Settings", and in the left panel click on "Ads". Facebook should present three items here, and the one we're interested in is at the bottom, "Ads based on my preferences". Click "Edit" and then another on the button "Go to ad preferences". There you'll be able to see all the categories under which Facebook divides your tastes. "Lifestyle and Culture", "Technology", and "People" are three examples of these categories, and by expanding their content you'll see the registered items. Each entry has an information circle that helps you establish where it came from or how Facebook detected it, but if you think the social network made a mistake, just click the cross on the right side.
According to Facebook itself, the main sources for recognizing these preferences are divided among the information on your profile, your general activity on the social network (such as Likes and comments), and the use of applications or websites outside Facebook (I imagine this refers to portals and apps that use Facebook credentials). If you want to delete all the references, nothing stops you from doing so, but you'll have to delete them one at a time, and if you keep using your account, new items will eventually appear.
