How to find out various statistics about Wikipedia and Wikimedia

Wikipedia and Wikimedia

List of main places to find detailed statistics:
 * Special:Statistics on Wikipedia - brief statistics on Wikipedia
 * wikistats - complex statistics on all Wikimedia projects
 * Wikipedia Interactive Statistics - brief statistics based daily refreshed interactive graphs,
 * http://wikipedia-stats.conus.info/ - Wikipedia articles created last month/week/day with most users contributing to article within the same period.

List of places to compare Wikipedia and Wikimedia with other web sites on the web:
 * Wikipedia.org_is_more_popular_than... - page on Wikimedia based on Alexa informations
 * Alexa TOP500 web sites in all languages

List of information comparing various projects inside Wikimedia:
 * Wikipedians_by_language - page on meta about the number of Wikipedians by language

List of places about the Wikipedia and Wikimedia status:
 * Wikipedia_Status - on berlios

From HowTo Wiki, a Wikia wiki.