WikiPedia does it
with a CcBySa licence and is very successful with it.
Λεπτομέρειες πλοηγού
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DebateGraph Community »DebateGraph Community
Other Questions and Feedback »Other Questions and Feedback
PublicRelations for DebateGraph »PublicRelations for DebateGraph
CreativeCommons fosters participation »CreativeCommons fosters participation
WikiPedia does it
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