Non-fungible tokens (NFTs) seem to be everywhere these days. From art and music to tacos and toilet paper, these digital assets are selling like 17th-century exotic Dutch tulips—some for millions of dollars. But are NFTs worth the money—or the hype? Some experts say they’re a bubble poised to pop, like the dot-com craze or Beanie Babi...

What Are Web 2.0 and Web 3.0? Web 2.0 and Web 3.0 refer to successive iterations of the web, compared with the original Web 1.0 of the 1990s and early 2000s. Web 2.0 is the current version of the internet (a term often used interchangeably with the web) with which we are all familiar, while Web 3.0 represents its next phase. Web refer...