I think not just here in this thread we should advertise /promote bitcoin by showing some positive feedback .we need to spread it also all around the internet such facebook, twitter, instagram and etc. So that more people will see.
Yes, Facebook and twitter are used by a large number of people around the world. I think 95% of the population uses these two social networking sites. We can promote Bitcoin on it and more people will know about Bitcoin
Your information about 95% of Facebook users and Twitter is greatly exaggerated:
As of June 2017, Facebook's audience was 2 billion users (26%)
The number of Twitter users reached 330 million (4%)
The population of the Earth in 2017 was 7,576,951,385 people.
All information from wikipedia.
But the target audience of the cryptocurrency market is much smaller.