I'm looking to imitate the functionality of Firefox's keywords in Safari. That is, I want to be able to type
wp Apple in the address bar, and Safari should go to the Wikipedia article on Apple. I found a Sourceforge project, SafariKeywords, which does just this, but it was last updated in 2004 and doesn't work on Intel-based Macs.
Does the latest version of Safari have this functionality built in and I just didn't find it, or is there something like SafariKeywords I can use, or is this just a feature I'll have to live without?