Honestly, the single biggest thing for me has been Powerline on top of ZSH. It's wonderful being able to tell at a glance without reading anything whether it's a local or remote shell, root or not, what editing mode the prompt is in (I use vi-style line editing), and if in a git repo whether the working directory is clean or not.
Others for me include:
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.