It knows what your dog's name is. It knows what you studied at university. It has a pretty good idea which football team you support. But did you know that Facebook also has an idea what your political standing is?
The social network recently altered the way in which its adverts function on its news feeds, restructuring ad preferences in order to give users a greater amount of control over what services and goods compete for their eyeballs when browsing the site.
This new system also gives users a glimpse of a whole heap of personal interests Facebook holds on you - from your lifestyle preferences to your favourite bands, to your political leanings.