My WPMediawiki plugin was converting anchor tags into nested anchor tags, which was failing horribly.
Also, I installed a redirect plugin which should allow me to use the wiki markup tag with a subset and still get the right plage.
For instance, [[sprouts|Sprouts]] should redirect to http://omnitech.net/Sprouts-6224 about tasty toffee peanuts, and [[khai-ranks|Khai Ranks]] should link to http://omnitech.net/Khai-ranks , a page about Khai ranking up in Karate.
UPDATE 2018 – this is WAY broken and I have remove the WP MediaWiki plugin. Hopefully WP-Markdown will get me some of what I want.