Here’s a tip that I haven’t seen mentioned yet. You know that you can use site:gov or site:ac.uk to search over the contents of a top-level domain, right? For example, you can do [site:ac.uk mp3] to look for pages with the word “mp3″ on UK university pages.
But did you know that you can also use the site: operator with subdirectories? For example, the search [site:apple.com/support calendar] will restrict the search for “calendar” to pages on apple.com/support. Or [site:channel9.msdn.com/wiki dhtml] will search the wiki subdirectory of channel9.msdn.com for the word “dhtml.” This has been something I’ve wanted for a while, even though I could always use inurl: as a workaround to get the same behavior. After I noticed that MSN has this ability (Chris Payne, you’re a Kentuckian too, right? Kudos!), I stopped someone and asked why our site: operator didn’t work with subdirectories. “What are you talking about?” was the reply. “We’ve supported that for months–didn’t you notice?” Oh well. I’ve been wasting keystrokes with inurl: for a little while, so I wanted to mention this to you.