Like most sites on the web, this one is using Google Analytics to measure how people use this website along with basic information about each visitor.
Personally, I use it to check how long people stay on my website, what country my visitors are in and what resolution they're on.
A special thanks to the creators and maintainers of open-source projects. Semantic-UI for an awesome framework, Siema for a slider that doesn't suck and ScrollReveal for the nice subtle animations for revealing content. Thanks!
Also thanks to Adrian for helping me figure out how to style svg icons within divs properly.