paperlined.org
apps > reddit
document updated 15 years ago, on Nov 23, 2008
http://www.stirrdup.com/
    Has "passive voting", where commenting (and other actions) upvote a story.  No downvoting, though this means "controversial" stories are promoted, rather than more accurate stories.  Homepage sorted by time.

http://www.dzone.com/
    Software development

Thoof  http://www.boingboing.net/2007/06/27/thoof_social_bookmar.html



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