For skip tracers, private investigators and other web search professionals who want to get more out of the major search engines like Yahoo! and Google , CNet.com has published a three-part article on Yahoo! search tips.
The article starts with the basic building blocks of creating good search engine queries and then moves on to more advanced search engine topics like: search engine shortcuts; automating and personalizing your web search results and comparing Yahoo! and Google search engine results.
You can read the Yahoo! search engine tips article @ DIY: Yahoo Hacks.