Since there is already a Meta Wiki page, I'll use this page to describe the Meta Wiki search engine.
It is an inter-wiki title search with sauce. More information can be found on usemod.com 
. If you'd like your clone to be listed, follow the instructions on Meatball Wiki. I have scripts to process many of the popular engines already.
Naturally, Wiki Wiki is indexed. -- Sunir Shah
Fractal Wiki isn't. Sorry, it is like it's a subwiki of Meatball. But what's the delay between page existence and findability in this search engine? -- Pieter Jansegers
I have recently (Apr05) requested Sunir to update his reference and he responded on Meat Ball he was interested in another person taking over the facility, as he has not got time.
Any body able and willing to take up this good cause? -- dl
See original on c2.com