[citation][nom]JOSHSKORN[/nom]Firefox should go 64-bit and end its 32-bit browser. Most computers out there now might actually be 64-bit. I haven't looked, but are they still selling computers in stores with 32-bit OS's?[/citation]
Sure, every machine you'll see in stores is 64-bit now, and anything made within the past 5 years can run a 64-bit OS, but many older machines (like in the Vista days) shipped with a 32-bit one. The main issue with a 64-bit browser is that Adobe Flash was, the last time I checked, 32-bit only (there was a 64-bit beta available though). It's only a matter of time though. And remember, with a web browser, you probably don't need more than 2GB of RAM just for that. But given that many browsers (ie, chrome, but not ff) put tabs in different processes, I think it helps to get around that 2GB limit.