[djoo]

In some African countries, Facebook is free via Mobile Data (also Wikipedia).

Therefore, it becomes the "only" Internet.

They even have cases of piracy movies being shared/available within theses sites.

[zekrioca]

This is so prevalent that there are many study groups on facebook just because of that: it is the only place they can "freely" exchange ideas, and voluntaries from other countries (without these limitations) help by copying and pasting info and documents so others can 'freely' download it.