I'm going to leave it as an exercise for the reader to figure out which one is the April Fool's joke. Only one is.

Short storyspreadsheet: Excel as a Trojan horse for literature. The long form of such a literary work would be called the 'novexcel', and the author of this particular one notes that the work is only effective in this format because:

Short storyspreadsheets by their very nature contain only cold facts, like them or not. Welcome to your world.

Which seems rather harsh, but then ... yeah.

On the bleeding edge of enterprise email server UI, which announces:

... installation of Exchange will disable the Windows OS ability to log on locally, except using the Guest computer account. Which will not let you do any damage to the server. Which will solve the problem.

Which also seems rather harsh, but they've definitely got the data to back themselves up, so ...