One of wykop.pl users sent NBP's response to his correspondence where they confirmed, that they spent 91221.99 PLN on campaign about virtual currencies.
The companies where they spent money are:
- Gamellon sp. z o.o. (Gamellon Limited) - YouTube partnership network
- Google Ireland Limited
- Facebook Ireland Limited
And here's propably one of YouTube videos made for NBP by a prankster:
Click here