Harper Collins

HarperCollins has a a campaign as part of their BookPerk.com site which allows readers to get great deals from their favorite authors.  If you are a logged-in member, you now can vote up your favorite author to get them featured as a daily deal.  Once you vote, you are prompted right into a Facebook share flow from Crowd Factory. Read on!

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Publisher's Weekly posted a great article about BookPerk and the future of audio books.