Some facts links....
http://commons.wikimedia.org/wiki/File:Timeline_of_Wikitravel,_Wikivoyage,_and_Wikimedia_Travel.png
http://governancexborders.com/2012/07/13/challenges-of-merging-communities-the-case-of-wikitravel-and-wikivoyage/
http://meta.wikimedia.org/wiki/Travel_Guide/supporters