Chrome is more heavily advertised since it's maintained by a tech corporation with lots of resources. And Chrome is also being preloaded onto a lot of Windows m

Chrome is more heavily advertised since it's maintained by a tech corporation with lots of resources. And Chrome is also being preloaded onto a lot of Windows machines by OEMs, so that's also pushing adoption. Meanwhile, Firefox is relying on the same advertising it always has relied on: word of mouth. The reason Firefox became popular was because the only other choice at the time was IE 6 (which already had a bad reputation at the time). Now, with Chrome out and receiving regular updates, users have little incentive to not use the browser that "everyone else" is using.