Alexis Ohanian showed off the NFT he bought for Serena Williams at the Met Gala

And they say NFTs aren't good for anything.

Reddit co-founder Alexis Ohanian showed off the NFT he bought for his wife, Serena Williams, on the Met Gala's red carpet on Monday. NFTs are a special type of cryptocurrency that exist on the blockchain, each one of them unique and impossible to replicate.

Ohanian wore the image...