Fans of Harry Potter books have been researching and preparing for the big release of the sixth installment on Friday, said Yahoo Shopping. "Harry Potter and the Half-blood Prince" is the most popular book on Yahoo Shopping and has been for several weeks, and it has more than 600 user ratings. Searches for "Harry Potter" or "Harry Potter and the Half-blood Prince" have climbed from the top 200 most popular Shopping searches (May 30) to the 11th most popular.
