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.

Picture Quotes Maker

Top Authors

• Leonardo Da Vinci

  Painter

  Thursday, Apr 15, 1452
  Friday, May 02, 1519

• Rodney Dangerfield

  Comedian

  Tuesday, Nov 22, 1921
  Tuesday, Oct 05, 2004

• Vincent Van Gogh

  Painter

  Wednesday, Mar 30, 1853
  Tuesday, Jul 29, 1890

• Will Rogers

  Actor

  Tuesday, Nov 04, 1879
  Thursday, Aug 15, 1935

• Dolly Parton

  Singer-Songwriter

  Saturday, Jan 19, 1946
  

• Thomas Aquinas

  Priest

  Tuesday, Jan 28, 1225
  Wednesday, Mar 07, 1274

• John F. Kennedy

  35Th U.s. President

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

• Socrates

  Philosopher

  Thursday, Jan 01, 1970
  Thursday, Jan 01, 1970

• Jean De La Bruyere

  Wednesday, Aug 16, 1645
  Thursday, May 10, 1696

• John Muir

  Author

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

• Stephen Hawking

  Physicist

  Thursday, Jan 08, 1942
  

• Muhammad Ali

  Professional Boxer

  Saturday, Jan 17, 1942
  Friday, Jun 03, 2016

• Ruth Bader Ginsburg

  Associate Justice Of The Supreme Court Of The United States

  Wednesday, Mar 15, 1933
  

• Mahatma Gandhi

  Civil Rights Leader

  Saturday, Oct 02, 1869
  Friday, Jan 30, 1948

• Bob Marley

  Singer

  Tuesday, Feb 06, 1945
  Monday, May 11, 1981