=== crowdsourcing ===
collating distributed human activities 
  * distributed proofreaders

for general tasks
  * https://crowdflower.com/
  * http://www.mobileworks.com/

specifics
  * botanical classification http://herbariaunited.org/atHome.php

for audio transcription ->
  * https://www.speechpad.com/ 
  * https://castingwords.com/
  * more at [[audio transcription]]

related; [[distributed computing]]