Contrary to the "invisible" cancellation of subscriptions, Phonebook dumping consists of depositing stacks of unwanted telephone books in front of offices of the business in who's name they are distributed (i.e., Verizon, Pacific Bell) in an attempt to bring consequences to bear upon these businesses that generate them. It is especially prevalent during Phonebook Month (observed) (U.S.), the month following distribution of stacks of phonebooks.