Great news - English Local Help is now available - http://crackingthevault.typepad.com/crackingthevault/2013/09/autodesk-vault-help-for-2013-and-2014.h...
But
1. I'd rather Vault local helps be moved to where it is stored for other software - "Documentation" section "below" Vault's Services and Support (http://usa.autodesk.com/adsk/servlet/autoindex?siteID=123112&id=9261334)
2. Please pay attention that not only English clients suffer from Wiki-help downs. Please consider sharing localized local helps as well (ex in our company Russian help is demanded).
Thank you for your suggestions. We are working on moving the Wiki content to a new site, and localized versions should be available in the next few months.