It was a big week in the never-ending Internet browsers race. First, Firefox 4 was finally launched two days ago – last of the next generation browsers to hit the market, trailing behind Chrome 10 and Internet Explorer 9. It brought some new and interesting changes to UI – a brightly colored Firefox start button, that looks like something nicked from a recent Opera version, plus a tab-pinning function, no doubt nicked from Google. I just wish that Firefox would go further with their “borrowingâ€