Social networks and social responsibility

It just so happened that social networks are a powerful tool for influencing the minds and hearts of people. The interests of people in social networks are not difficult to analyze by the popularity of games - one of the top areas of games is the struggle for rating. I would like to invite the owners of social networks to use such weaknesses of people, which is called for peaceful purposes. To make it clearer what I'm talking about, I will give an example.
For example, in blood collection points, each person who donates blood can be given a unique number. The introduction of this issue in the social. Networks could give some rating advantages to a person, some insignia or additional features available only to the owner of such numbers. This could at least arouse the curiosity in people - “what kind of signs are these?”, And at the very least would serve as an impetus to also participate in something very necessary for the people around us.
Although I do not really believe that this is possible, it will soon appear on the social networks “McDonald's and the most gluttonous Facebook user”, but I think it was necessary to write.
I would like to see in the comments your thoughts on how else you can draw people's attention to social problems in social networks.
I’m also ready to talk with representatives of social networks.