Sounds like a good idea to me. In the UK there was in internet campaign to put banners on buses telling everyone that it was ok to put "No Religion" on the Census form, rather than put the cultural default of Church of England.
It was successful, and got a lot of media attention.
On the news today, there was yet another banking scandal. Us Brits are fed up with banks.
I donated to this. The slogan read, 'There's probably no God, so stop worrying and enjoy your life'.
I would certainly donate to a bitcoin ad campaign
I will be including a 'pay with bitcoin' logo on my magazine ads.