Google rivals Facebook, Twitter, and MySpace have picked a fight with  the search giant by launching a browser bookmarklet called "Don't Be Evil." The bookmarklet rewrites Google Search Plus Your World search results to return content from Twitter and other social networks, according to AllThingsD. The move is in response to the recent launch of Google's personalized search, which favors results from Google's own social network, Google+. The bookmarklet can be downloaded from, a web site created by the rival group. It can be installed in Chrome, Firefox, and Safari, but doesn't work in Internet Explorer. Here's how it works: After running a search in Google, click on the bookmarklet, and results will be reordered, regardless of their source. Thus, content from other social media sources are now integrated into results that exclusively promoted items from Google+.