Apple has reportedly modified its app ranking system to include criteria besides the number of application downloads. This change was noticed by ad network executives and other companies that monitor the ranking of applications in Apple's iOS App Store.
Facebook, Skype and Pandora are three applications whose spike in ranking caught the eye of many people. Facebook moved from #13 to #1, Skype from #33 to #11 and Pandora from #22 to the top ten. Before last week, these apps were steady in their rankings, leading many to believe that Apple modified something in its ranking system to produce these jumps. Read on to find out what criteria Apple may have changed.