With the update to Safari 6 (either with or without Mountain Lion) the omnibar is now a standard feature, this means that the SIMBL plugin I had been using earlier is unnecessary. While that seems like a win on the one hand, with the depreciation of the Safari Omnibar SIMBL plugin goes its ability to make use of other search engines.

Fear not, there is a solution to this dilema! Arne Martin has created an extension to provide that very functionality and it's called Safari Keyword Search 2.0.

All you need to do is download the extension, double click to install, and your off to the races. Each search engine has a customizable keyword/letter that pipes your query through that particular search engine.

The default choice, i.e., without a keyword prefixing your query, is Google's Feeling Lucky. Since I'm not a fan of Google Search, I decided to make the smallest tweak to make DuckDuckGo the default choice.

Simply:

1. Right click anywhere on your screen.
2. Select the "Keyword Search Settings…" option from the menu.
3. In the "URL expansion" textfield delete the current item and paste in http://duckduckgo.com/?q=@@@
4. Hit "Save" and enjoy the rest of your day.