I'm particularly interested in #23 since it is clear that Wikipedia is even more dominant now than it was in 2008: More open alternatives to Wikipedia. Deletionists rule Wikipedia. Ironically, they're constrained by print-era thinking. What harm does it do if an online reference has a long tail of articles that are only interesting to a few people, so long as everyone can still find whatever they're looking for? There is room to do to Wikipedia what Wikipedia did to Britannica.