Definition of "Digger"

Digger¹

/ˈdɪɡɚ/

noun
plural Diggers
1. A soldier from Australia or New Zealand.
2. (historical) One of a group of Protestant English agrarian communists, begun by Gerrard Winstanley as "True Levellers" in 1649.
3. (obsolete, derogatory) One of a degraded tribe of California Native Americans who dug up roots for food.

Digger²

/ˈdɪɡɚ/

noun
plural Diggers
1. (Internet) A user of the American news aggregator Digg.
  Quotations
  THANKS TO DIGG, the Web’s most frequented news-ranking site, we now know: Geeks like gaming gossip, incendiary technology policy stories, and NASA photos. Diggers vote early and often, and can get breaking news to the front page surprisingly quickly.
  2006, PC World, page 115
  Redditors are similar to Diggers (twentysomething geeks), albeit the former are slightly more educated and gender neutral.
  2009 November, Dan Zarrella, “Social News and Bookmarking”, in The Social Media Marketing Book, O’Reilly Media, published 2011, section “Reddit”, page 121
  As Justin Halpern told me, “I think what both [Rob Corddry and actress Kristen Bell] did, especially Rob, was that they got Shit My Dad Says seen by people that aggressively share stuff online. Diggers, Redditors, etc. […]”
  2012 September, B. J. Mendelson, “And Now You Know … the Rest of the Story”, in Social Media Is Bullshit, New York, N.Y.: St. Martin’s Press, part I, page 53