I've finally open access to the documentation wiki for vcs (and also mp3plot and nautilus-follow-symlink). It's far from complete, with a lot of stuff to add, but I'm moving there all documentation progressively so there's the place to look for help.
I started using MediaWiki but later scaled back to DokuWiki.
Please note: New comments won't appear immediately, they have to be manually approved (usually done quickly).