In my opinion, marketing in such social networks as twitter and facebook performs well. Also for myself I took note of reddit. There sits a very large number of people in the field of cryptocurrency.
Facebook and Twitter is a social platform that has very many users so it is very effective in advertising a product or service because now almost everyone can access it.
and that is a very appropriate way to use for the spread of cryptocurrency.
The fact is that users of cryptocurrency use social networks, but only in limited quantities. Based on this, I think that YouTube and communication on specialized forms can be more effective for advertising cryptocurrency.