I have collected Wikipedia-related graphs and charts in a single category:
http://en.wikipedia.org/wiki/Category:Wikipedia_charts
Please note that there is also
http://commons.wikimedia.org/wiki/Category:Wikipedia_statistics
where those files should be moved from the en-Wiki category, meta
http://meta.wikimedia.org/wiki/Category:Wikipedia_statistics and similar
categories on other WikiMedia wikis (and their subcategories...).
Next on my agenda is to go through every page in
http://en.wikipedia.org/wiki/Category:Wikipedia_statistics and create a
short table of content.
--
Piotr Konieczny aka Prokonsul Piotrus
"Be seeing you, Commander."
-- Bester to Sinclair in Babylon 5:"Mind War"