Is Facebook sharing making us more vain?

The Guardian, Wednesday, 25 September 2013 15.16 BST

http://www.theguardian.com/commentisfree/2013/sep/25/facebook-vain-tools-ideology-sharing-users

The article it is based in a recent psychological research about the question: is Facebook making people more vain? 
The research authors say that Facebook has given everyone the chance to be a mini celebrity, and, actually they mention that a Facebook profile acts as a personal Public Relation campaign. This self-promotion makes users want to compete with others to see who is more popular, meanly based on how many "likes" or "comments" they self-pictures had. The problem, they say, is that users apply this metric to rate how important, popular and attractive people are in real life, and they say this is not healthy. Actually, about this last point, they mention that there is a study that reveals that young women suffer extra body image issues as a result of looking at other people's Facebook pictures, and more than half of those polled in a survey for the Centre for Eating Disorders said looking at photos of themselves on Facebook increased their body consciousness. 
The article author concludes, based on this psychological research, that the central tools of Facebook, such as profile pictures and status updates, are pretty related with narcissism, and if that is then feeding into poor self-image and depression, the author point out that it is not something that should be ignored.