NFTs (Non-Fungible Tokens) have started to be used as a new marketing tool in the advertising industry. NFTs create unique digital assets and prove ownership using blockchain technology.

There are several important roles that NFTs play in advertising:

1. As a new advertising platform: NFTs are built on the uniqueness and ownership of digital assets. Therefore, advertisers can use NFTs to create unique digital assets that represent their brands, products, or services.
2. To increase engagement: NFTs can be used to create interactive and engaging campaigns that incentivize users to engage with the brand. For example, a brand could create a limited edition NFT that can be unlocked by completing a specific task or interacting with the brand in a certain way.
3. To create brand loyalty: NFTs can be used as a reward for loyal customers or fans. For example, a brand could create a series of NFTs that can only be obtained by customers who have made a certain number of purchases or engaged with the brand in a particular way.
4. To create a new revenue stream: NFTs can be sold on various platforms and can provide a new revenue stream for brands and creators. For example, a musician could sell limited edition NFTs of their album cover art, with each NFT representing a unique and valuable piece of digital art.

Overall, NFTs have the potential to provide a new and exciting way for brands to engage with their audience and create unique and valuable digital assets.