Some critics have challenged what the return on investment is for engagement in social media. Others have complained that the metrics don't exist to demonstrate value.

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Top Authors

• Aldous Huxley

  Writer

  Thursday, Jul 26, 1894
  Friday, Nov 22, 1963

• Dwight D. Eisenhower

  34Th U.s. President

  Tuesday, Oct 14, 1890
  Friday, Mar 28, 1969

• John Muir

  Author

  Saturday, Apr 21, 1838
  Thursday, Dec 24, 1914

• Mae West

  Actress

  Thursday, Aug 17, 1893
  Saturday, Nov 22, 1980

• Michael Jordan

  Basketball Player

  Sunday, Feb 17, 1963
  

• Dalai Lama

  Saturday, Jul 06, 1935
  

• Helen Keller

  Author

  Sunday, Jun 27, 1880
  Saturday, Jun 01, 1968

• Groucho Marx

  Comedian

  Thursday, Oct 02, 1890
  Friday, Aug 19, 1977

• Alfred Lord Tennyson

  Poet

  Saturday, Aug 05, 1809
  Thursday, Oct 06, 1892

• Billy Graham

  Evangelist

  Thursday, Nov 07, 1918
  

• Kanye West

  Songwriter

  Wednesday, Jun 08, 1977
  Thursday, Jun 04, 2015

• Francis Of Assisi

  Saint

  Thursday, Jun 24, 1182
  Saturday, Oct 03, 1226

• W. Edwards Deming

  Statistician

  Sunday, Oct 14, 1900
  Monday, Dec 20, 1993

• John F. Kennedy

  35Th U.s. President

  Tuesday, May 29, 1917
  Friday, Nov 22, 1963

• George Bernard Shaw

  Playwright

  Saturday, Jul 26, 1856
  Thursday, Nov 02, 1950