Hot Sheet Index: January 27, 2016

  • Increase in US print sales of adult nonfiction books in 2015: 7%
  • Increase in US print sales of art/design/photography category in 2015: 60%
  • Decrease in US print sales of computer category in 2015: 9%
  • Decrease in US print sales of humor category in 2015: 5%

  • Increase in US print sales of adult fiction books in 2015: 2%
  • Increase in US print sales of the classics in 2015: 32%
  • Decrease in US print sales of psychology/horror in 2015: 33%
  • Decrease in US print sales of mystery/detective in 2015: 12%

  • Pottermore revenue in 2014: £31.8 million
  • Pottermore revenue in 2015: £7 million
  • Pottermore profit in 2014: £14.9 million
  • Pottermore profit in 2015: -£6 million (loss)

  • Average pageviews per month at Wikipedia: 18 billion
  • Number of new articles added every month to Wikipedia: 20,000
  • Number of registered Wikipedia users: 23 million
  • Number-one Wikipedia article (English language): List of deaths by year

Sources: The Hot and Cold Book Categories of 2015Harry Potter Digital Arm Loses £$6m and Sheds JobsWikipedia at 15