tanaquil:

THE QUIBBLER: The tabloid newspaper of the Wizarding World is called The Quibbler. The current editor is Xenophilius Lovegood, the father of Luna Lovegood. It publishes an edition every month.

The Quibbler prints wild, silly, and bizarre stories about famous people, particularly involving conspiracy theories. However, they also printed Harry’s story of the rise of Voldemort. Later, after Voldemort’s ascendancy during the Second Wizarding War, The Quibbler urged the Wizarding World to support Harry Potter at a time when the Voldemort-controlled Ministry of Magic had declared Harry Potter to be “Undesirable Number One”.