Some minutes ago I rolled version 0.2.0 of Services_Yahoo, which sports a brand-new fluent interface for the part that implements the web search API. Also the package now uses the serialized PHP data that is provided by Yahoo! instead of parsing their XML output. I’m not yet 100% satisfied with the fluent interface, but I think it comes pretty close to what I want it to be.
It will take until Sunday for the documentation on the PEAR website to be updated, but if you want to try the new release before, you’ll find some example code in the unit tests. Feel free to file a bug report or two if you encounter anything odd.