Which innovative digital marketing strategy helped the World Wildlife Fund (WWF) increase donations by over 70% during their 2018 campaign?

The most successful wildlife conservation organizations don't just protect animals—they tell compelling stories that inspire action. Behind every major conservation victory is often a brilliant marketing campaign that changed hearts, minds, and policies. This trivia question explores one of the most innovative digital marketing strategies that revolutionized wildlife fundraising and awareness in the past decade.

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The 'Adopt an Animal' NFT collection that gave donors digital ownership certificates for endangered species
The 'Last Selfie' Snapchat campaign featuring disappearing photos of endangered animals with the tagline 'Don't let this be my #LastSelfie'
The 'Wildlife Witness' app allowing tourists to report illegal wildlife trade activities they encountered during travels
The 'Earth Hour AR Experience' that showed users' homes surrounded by wildlife that would benefit from energy conservation