Hi everyone,
I've found that Silverstripe's built in search feature can't match an indexing and ranking search engine for quality, so I've written some code that integrates JRank - an external search engine - into Silverstripe. You can find the code here:
http://hdrlab.org.nz/integrating-the-jrank-search-engine-into-a-silverstripe-site/
It's not implemented as a module, because I'm quite new to extending Silverstripe, and PHP in general, but it is fairly easy to set up. Added to that, it works nicely as-is. Any comments or suggestions are welcome.
Hans