Search Results in a New Tab
Displays search results from the search box in a new tab (instead of the current tab)

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Tweak Type:	General |Tabs
Fx 2:	YES
Fx 3:	YES
Fx 3.5:	YES

With Firefox 2 search results (entered in the search box) open in current tab. A simple about:config entry change will display search results in a new tab:

1. Access about:config via the extension button or by opening a new tab and typing about:config in the address bar
2. Copy and paste into the filter field browser.search.openintab
3. Double click the entry to that the value changes to true
4. Close the tab or the about:config window.

Source