Liam Dempsey gave a presentation on Sass (Syntactically Awesome Style Sheets) at the Philadelphia WordPress Meetup in February 2014. He discussed what Sass is, why designers should use it, and how to set up a local development environment with Sass. He covered basic Sass features like variables, nesting, extends, mixins and more. The goal was to help designers get started with Sass and remove fears about using it.