Sometimes, Facebook is called a low quality website, because the content their is compared to Wikipedia and Google Scholar not written by experts. The strength of Facebook is something different, it has democratized the creation of knowledge. The well known Wikipedia for example is written worldwide by not more then 10000 people, and the papers in Google Scholar were created by around 10 million researchers. Compared to the world population this is less then 0.2%. Even weblogs are written by a minority. In contrast, Facebook is written by everybody. Huge amount of people have made their first step in the Internet with Facebook, and they have posted for the first time in their life a comment in a public readable form. After submitting a message it can be seen by 7 billion people worldwide, it is online.
I’m not sure what the future of Facebook will be, but it was revolution in the past. Facebook has made the internet to a mainstream medium. In contrast to Wikipedia, or Blogs, Facebook is not only read by the people but they are creating content actively. Sometimes, Facebook is criticized because the old generation of people over 60 years become a user too. But that is an advantage. No other internet website before was able to motivate grandma for posting content. Not reading a comment but writing a text is the normal interaction with Facebook. It is an active medium, especially for people who are beginners.
The reason why the quality in Facebook is so low, has to do with the authors in Facebook. They are not an elite of technology experts but they are normal people. Most of them have never published a text before and Facebook is the first time in their biography they are writing something which can be read by the world. Personally, I’m not using Facebook very much. I’m preferring blogs, Wikipedia and Academia.edu for dropping content. But I see the point, why the people are using Facebook. It is the easiest form in making the first steps into the direction of becoming an author.
From the media perspective, Facebook can be called a microblogging service for a beginner authorship. If somebody did not understand how to post a comment in Facebook, he will probably never post a comment in the internet at all. It is a shared learning experience to become familiar with the internet and user generated content. Facebook makes it very easy to upload textual and visual information. It was designed from the beginning for a non-expert audience. This results on the first hand in low quality content but has an advantage that the number of people who are familiar with it is very high. If somebody is already an Facebook expert, he will learn in the next step how to use a blogging software or how to program in Python. Facebook is some kind of backchannel which motivates the people to use a computer actively.