It's enormously popular in web development, especially front-end development. It's probably the most popular with modern web developers who don't use Vim/Emacs.

It's enormously popular in web development, especially front-end development. It's probably the most popular with modern web developers who don't use Vim/Emacs. It certainly appears to have long overtaken Textmate, which I only rarely see referenced. Of course, this is all anecdotal. It's likely that the vast majority of working developers never post screencasts or really discuss their editor of choice, and just get on with their work. So in terms of code actually created, it's a very poor assessment.