This is the 5406th most frequent Japanese word.
xtwitter
The term "xtwitter" does not exist as a Japanese word. It may refer to "X (formerly Twitter)," the platform's rebranded name.
The word 'xtwitter' is utilized here as the name of a platform where the article was accessed.
今日はxtwitterで新しい記事を読みました。
Today, I read a new article on xtwitter.
In this context, 'xtwitter' indicates the social media site where the friend's post appeared.
友達がxtwitterに面白い投稿を載せました。
My friend posted an interesting entry on xtwitter.
Here, 'xtwitter' refers to the platform being used by firms for promotional activities.