I have just found a magnificient one.
Propositional function has nothing in Wikipedia.
http://www.google.co.uk/search?hl=en&sourc...&meta=&aq=f&oq=There is a redirect to 'mathematical function', but that has nothing to speak of of the 'propositional' variety. So, here is a concept fundamental to the development of analytic philosophy and logic in the twentieth century, that every undergraduate philosophy and philosophy student will have to learn about, and Wikipedia has almost nothing about it, and no separate article at all.
Even better, I can now simply declare that the next Peter Damian sock is going to create a separate, well-sourced article on the propositional function (and perhaps email a few significant admins such as Mikaey of this intention). Result: the Wikipedia administration will be closely watching for the creation of such an article in order to block anyone who is trying to build a serious and comprehensive reference work by adding important new material.
The irony meter is now well into the red zone.