Search Google Topics

Google doesn't talk about it much, but it does make specialty web searches available. And I'm not just talking about searches limited to a certain domain. I'm talking about searches devoted to a particular topic (http://www.google.com/options/specialsearches.html). You'll find four specialty searches related to technology, one that limits results to U.S. government sites, and hundreds of specialty searches limited to specific universities across the U.S. The Google API makes four of these searches available: the U.S. Government, Linux (an alternative operating system), BSD (Berkeley Software Distribution, another alternative operating system), and Macintosh (your friendly Apple cult).