Facebook's "Like" is surprisingly new; I found a Mashable article[0] from the day it was released in April 2010. Digg, on the other hand, is surprisingly old[1]

Facebook's "Like" is surprisingly new; I found a Mashable article[0] from the day it was released in April 2010. Digg, on the other hand, is surprisingly old[1]. [0] http://mashable.com/2010/04/21/facebook-f8-2/ http://mashable.com/2010/04/21/facebook-f8-2/ [1] http://en.wikipedia.org/wiki/Digg http://en.wikipedia.org/wiki/Digg