“The Narodowy Bank Polski (NFB) spent around 91,000 zloty (£19,430; $27,300) on Google, Facebook, and other websites, in a subversive smear campaign aimed directly at attacking the legitimacy of cryptocurrencies — such as Bitcoin, Ethereum, Litecoin, etc. NFB also paid prominent Polish YouTube network Gamellon to run anti-cryptocurrency videos without disclosing the fact that the videos were technically sponsored content.”
Read more: https://bitcoinist.com/polish-central-bank-paid-youtubers-low-dirty-smear-campaign-cryptocurrency/