A new article http://www.logicmuseum.com/wiki/Dici_de_omni in the Logic Museum today on the axiom of dici de omni, which I also discuss here http://ocham.blogspot.com/2012/02/dici-de-omni.html . The corresponding Wikipedia article http://en.wikipedia.org/w/index.php?title=...oldid=425145702 is seriously deficient and inaccurate. The irony, as I note, is that Wikipedia will be unable to link to the Logic Museum article, because of the current ban on outbound links (although there is currently no corresponding ban for Wikipedia articles that link to Wikia pages such as My Little Pony or Star Trek or Dr Who).
The original Wikipedia article hasn't been updated much since 2009, and was even nominated for deletion in 2008, because some Wikipedian administrator had no idea what it was about.