Mozilla on 2012: We Found Our Mojo Again
"We streamlined and we upgraded. Our performance and memory teams didn't incredible work," Mozilla said. "The Firefox of today is significantly better than the Firefox of a year ago in every way, and we're seeing that recognized in our formal feedback channels, and in comments from strangers when the see a Firefox t-shirt."
Memory management has traditionally been one of Firefox's weak spots, though we have to agree that Mozilla's made great strides in the past 12 months. Memory leaks, once a major problem, are relatively minor these days.
If nothing else, Mozilla has certainly been busy. Mozilla rebuilt Firefox from the ground up for Android, has been working on a Firefox OS, and has been championing Do Not Track technology, which it says is enabled by more than 19 percent of Firefox for Android users and 8 percent of desktop users.