When you type a non-address into the Firefox address bar it uses Google's "I'm Feeling Lucky" search to match the keyword with something. Switch it from feeling lucky to showing actual search results with this simple hack.
When you type "Lifehacker" into your Firefox address bar you'll end up at Lifehacker.com. This happens because Lifehacker.com is the first result for a "I'm Feeling Lucky" search at Google. Not every "I'm Feeling Lucky" search matches up so perfectly so you'll frequently find yourself being kicked to some feeling-not-so-lucky site that doesn't match up.
You can change the default behaviour of Firefox however so that instead of dumping you into the "I'm Feeling Lucky" results Firefox will take you to the full-page of search results so you can pick the best option or revise your query altogether.
Over at How-To Geek they highlight the simple tweak you need to make. Type about:config in the address bar, search for keyword.URL, double-click to edit the string, and delete the portion of the URL that reads &gfns=1. From then out, you'll see the actual search results at Google instead of their best guess on your behalf. To see the tweak with step-by-step screenshots, visit the link below. Have a tweak or trick to share? Let's hear about it in the comments.