The Celebrity 100 is a measure of power based on money and fame. Earnings estimates, which include income from films, television shows, endorsements, books and other entertainment ventures, are calculated between June 2009 and June 2010. Figures were rounded off where appropriate. Additional sources include Billboard, Pollstar, Adams Media Research, The Nielsen Company and SNL Kagan. Fame is calculated using Web hits on Google ( GOOG - news - people ) Blog Search, TV/radio mentions on LexisNexis, overall press mentions on Factiva and the number of times a celebrity's image appeared on the cover of 25 consumer magazines. Social rank is calculated using metrics like Facebook friends and fans as well as Twitter followers.
