The meme dates to 2021 and ties into anime, with users spelling out a character named Yui from the Japanese show “K-On!,” as the keys are next to one another. It hit the mainstream last week.

Brands like 'Sesame Street,' ITVX, Channel 4 and Wendy's react to Twitter rebranding as X sharing memes on the social media platform.

This has not come as a surprise, since Musk has had a long affinity with the letter ‘X’. This dates back to 1999, when he co-founded X.com, an online bank, that merged with another start-up to ...

Meanwhile, Meta Platforms, a competitor to Twitter with its Threads platform, has a federal trademark registered in 2019 for a blue-and-white letter "X," encompassing software and social media fields.