If you’ve spent time on Twitter recently, you’ve probably noticed the mysterious .eth added to some big account names. Even if you intentionally tune out “NFT Twitter,” you may also have noticed how some of your favorite brands, musicians, publications and entrepreneurs have recently changed their social media profile names – something they have spent millions of marketing dollars to cultivate over decades (or in some cases, centuries). In December alone, Budweiser, NBA super-star Shaquille O...