If you are using chrome and you visit any Yahoo property, chances are you’ll see an “Upgrade to the new Firefox” link in the top-right corner of your browser window.
The prompt also appears if you’re using Internet Explorer, Opera and even the new Yandex browser. However, the prompt is missing from Safari, which will surely prompt a new round of speculation about Apple’s rumored switch to Yahoo as its default search engine.
Firefox now uses Yahoo as its default search engine, and Yahoo wants as many people as possible to use Firefox with it its search engine (which is powered by Microsoft Bing).
Firefox’s user share has dropped quite a bit over the last few years, so Mozilla has no objections to putting the Firefox logo in front of as many Yahoo users as possible. Changing the default search engine in Firefox is trivial (and Firefox recently made it even easier), but most users never bother to make the switch.
The new Yahoo Search design for Firefox users also looks pretty much exactly like Google’s, so some users may not even notice the difference.
Credit: Tech Crunch