I am not sure it is that simple. For one, there are people who don't switch to Chrome because of specific Firefox extensions that they love [ed: you can pry Tre

I am not sure it is that simple. For one, there are people who don't switch to Chrome because of specific Firefox extensions that they love [ed: you can pry Tree Style Tab out of my cold dead hands] and therefore maybe those who switch to Chrome are people who use extensions less extensively to start with. In other words if you don't use extensions a lot, perhaps you are more likely to switch browsers. And while I have no reason to believe I am representative, I don't tend to accumulate Firefox extensions the way I, say, accumulate iOS apps. There are advantages in culling, and new releases offer a frequent opportunity to do so.