I'm asking about your 2nd favourite Wiki, because the correct answer to your favourite Wiki is obviously the TWC Wiki!
So which other wiki's do you enjoy reading or editing?
I'm posting here instead of the Q&S as it's not an official request for ideas about the site, just a bit of curiosity about which ones other people find nice to use and/or interesting. Having said that, now our Wiki has been updated there is more potential to introduce new features and consider things like completely new skins...
To start things off, I only just recently found* Wikivoyage, which seems to have tons of useful travel info, and interesting gadgets like clickable maps!**
* I've no idea why it's taken me that long to find that version, except I kept ending up at Wikitravel, which I guess pays for ads
** I'm definitely not volunteering to try and get one of those working!