Improving on the Star Trek & Battlestar Galactica ‘verse wiki searches I created for Quix, I added a line to search a Buffy wiki, http://buffy.wikia.com.
If you’re using the file hosted on my site at http://arkhamarchivist.com/quix.txt then the line should be automatically added to your Quix. Just use the prefix string
buf in front of your search term.
And for those building their own add-on sheets, the code is as follows:
buf http://www.google.com/search?q=site:http://buffy.wikia.com/wiki/%20%s Buffy Wiki