A Mozilla Firefox employee, Asa Dotzler, in his blog, has estimated from the recent download stats of both Google Chrome and Firefox that, for every one new user of Google Chrome there will be 2.5 new users of Firefox. He has also created a graph in which you can see the download rates of both the browsers. Here is the graph:
It is difficult to say which is good. Firefox has been ruling the browser industry for a long time, while the new baby, Google Chrome has also made a tremendous growth in a short span of time.
However, I personally feel that, one factor for the exponential growth of the Chrome browser is advertising. Google has been advertising its browser everywhere. Starting from its homepage, Chrome ads are on, almost every page of Youtube. They also have promoted it offline by creating banners all over Europe.
Apart from other factors like speed, lightweight etc, another important factor is the Extensions gallery of Google Chrome. Many people, in the beginning, hesitated to move to Chrome because of the lack of extensions in Google Chrome. Now that the gallery is full of useful extensions, this certainly is a huge factor that is influencing on the growth of the browser.
Nevertheless, I prefer Firefox always. What do you use? Google Chrome, Firefox or any other browser? Please share your comments on this.