How to encourage self-archiving of preprints in science?
From what I see, some organizations are solving this by making self-archiving mandatory. In the UK, research funding bodies are now starting to use only open-access publications to assess the quality of research. As a result, the universities are starting to require their academic staff to self-archive publications. Also, I've seen a conference organizers discussing whether they should require the authors to self-archive the accepted papers.