The IBM developerWorks has a new tutorial they've posted (free registration required) looking at making a Yahoo! SearchMonkey application by combining an RDF document, transforming it with XSLT and binding it all together with PHP.

SearchMonkey is the first product from a mainstream search engine provider that takes advantage of Semantic Web technologies to enable you to produce more relevant search results and thus drive more traffic to your Web site. With common Web development technologies such as PHP, XSLT, and XPath, provide a better experience for searchers as you use structured data encoded in Web pages using Semantic Web standards such as Microformats, eRDF, and RDFa.

They start the tutorial by introducing the SearchMonkey technology and a sample application showing how to interface with it (enhancing the search results for the blogspot.com blogs). The XSLT comes in when formatting the RDF data (DataRSS) by overlaying the data on existing websites.

At the Developer Tutorials blog mentions, a new offering from Yahoo! is making it simple to "spice up" the results for your site when someone searches for it - Yahoo! Searchmonkey. It's a PHP-based platform for creating an application that's returned inline with the search results.

Rasmus Lerdorf has an example of the potential output for a search returning a restaurant's name, links to its menu/wine list, reviews and a link to make a reservation.

There's lots of fun things to do with this tool - check out the developer page for more information and grab the developer tool to jump in and get started building your own custom result.