Probably not directly the result of the 'Digital Revolution', The World's Biggest Bookstore may be closing it's average-sized doors at the end of 2013.
Seen as many locals as a bastion of literacy in a mostly illiterate area (yes, HMV does carry graphic novels), World's Biggest Bookstore has remained a source of imported magazines and hard-to-find publications when one can't get to an independent bookstore.
Though nothing is certain, this post from Yonge Street Media confirms that the lease will not be renewed.