Hello,
I have wrote a "google suggest" like service for wikipedia under GPL
licence [1].
By the way, I am not sure if this project will interest you, I am open
to all comments from your community.
I wrote a simple web site for english/french on
http://suggest.speedblue.org, all software are available in the download
section.
Best Regards.
Julien Lemoine
[1] If you want me to change the licence to something other than GPL,
please let me know.