10. The system of claim 1 , wherein the one or more interaction events comprise at least one of: application installation count, time spent using the application, application content printing, application content saving, application content copying, application content bookmarking, application content address copying, application content number of visits, application content scrolling, application content pointer clicking, application content zooming, application content switching, time spent reading application content, application content highlighting, application content emailing, application content address emailing, or application address emailing.
10. The system of claim 1 , wherein the one or more interaction events comprise at least one of: application installation count, time spent using the application, application content printing, application content saving, application content copying, application content bookmarking, application content address copying, application content number of visits, application content scrolling, application content pointer clicking, application content zooming, application content switching, time spent reading application content, application content highlighting, application content emailing, application content address emailing, or application address emailing. 11. The system of claim 10 , wherein the amount of time spent in using the application is normalized based on at least one of or a superposition of at least two of: a length of the documents; an expected par time in a gaming application; a sound media length in time; a video media length in time; a static image complexity; a fragmentation.