The short story X ing a paragrab is written by Edgar Allan Poe.
It is one story that had me laughing so hard.
Written during the olden days, when the press used to manually set the entire article, letter by letter. And the rivalry between two presses and their challenging each other on drafting an article, with using of one particular character in almost all the words. So what happens when the entire block of that particular character is stolen and how the habit of using the character x as an alternate for the missing character is used.
I believe this was the starting point for all those challenges for using or not using any of the characters in blog posts.