Cryptocurrency and Bitcoin are most searched keyword of the year 2017. Many search engines such as Google and Yandex have collected tons of information about bitcoin and altcoins. Starting a blog on cryptocurrency can be profitable only if you can help someone not misguide them to earn affiliates and bounties. We need truth, if you can create a site which is only an SEO garbage site then your blog is of no use.
What is Blogging?
Blogging is all about the relation, more you collect returning users more people will encourage your site. If people stay on your site for more time then your content is very useful and interesting. Test your articles with Steemit, which will give you rewards in STEEM currency.