• Add keywords to every single web page.
• Restrict the keywords to a defined list (controlled vocabulary).
• Add a thesaurus database so that keyword searching for similar words like wetlands, wetland, swamp, and swamps all give the same result.
• Add the broader, narrower and related keywords to the search results.
• Enable the PIPI search engine to learn from previous keyword searches, google searches and website traffic so that popular items are ranked highly.
• Archive old information.

Do you have suggestions?