Extra Search feature...
...as features demonstrate more technical work than straight text. The use case on this feature is to locate specific information inside the site. This feature is also a testcase for the post handler structures.
In future I intend to rebuild this using the actual Google API, so the user doesn't appear to leave the site. The use case for this site is entirely different from other sites, having absolutely no private data. Using a public search engine is sensible as it is a stable and administered process.
When I have built the tag cloud, I will add a second line of results against the tag cache.
If you have somehow gotten lost, try the site chart in the footer.