What do you think?

Will be Awesome Upgrade your Account with Bitcoins/Litecoins/Dogecoins.

Unlikely, albert has already laughed at the idea.

Yeah, cryptocurrency payments are very unlikely to be accepted on Danbooru any time soon, and hoo boy, am I thankful for that.

I was actually thinking of suggesting Stripe as a payment method, but then I saw their Prohibited Businesses page.