If we talk about social media and bitcoin, the two things are very related, for example, twitter and facebook, almost all bounty altcoin there bounty social media like twitter and facebook, for instagram there is never bounty. But on twitter, facebook, and youtube there is a lot of information about bitcoin and altcoin, I just know about bitcoin from facebook
Twitter and facebook are also using in social campaign, and yeah theres a lot of information about bitcoin, about the campaign you are on, and share to other people what you are doing on that, and also if you have been posted about bitcoins price people get some interest and they think they can earn that amount in an instant, thats how people think nowadays.