IMHO, Firefox has more and more trouble to renew itself.
This browser was great when it come out, fast, reliable and virus-free. I remember the good old time of IE when you have to wonder forever whenever if you'll click on a suspicious link or not. However, I have the feeling since chrome come out, they don't innovate anymore. Extensions are slow and unreliable, a lot of stuff feels like copy/paste from Opera or Chrome, Firebug, once the greatest, seems outdated, they have taken forever to support retina display on the mac, their engine crash or freeze in JS heavy environment... and they removed the blink tag.
This browser was great when it come out, fast, reliable and virus-free. I remember the good old time of IE when you have to wonder forever whenever if you'll click on a suspicious link or not. However, I have the feeling since chrome come out, they don't innovate anymore. Extensions are slow and unreliable, a lot of stuff feels like copy/paste from Opera or Chrome, Firebug, once the greatest, seems outdated, they have taken forever to support retina display on the mac, their engine crash or freeze in JS heavy environment... and they removed the blink tag.
My 5 cents.