<img alt="" height="1" width="1" />QuickWiki for Firefox Shows Pop-Up Previews for [b]Wikipedia Entries[/b] Lifehacker Firefox: QuickWiki allows you to look up any word on Wikipedia when you're browsing without having to open up a new tab by showing you a small pop-up when you Ctrl+click a word. QuickWiki can be set to work with pretty much any key and click ...