WordPress powers almost 20% of the Web - that's crazy. As the most popular blogging system in use, WordPress is easy to setup, but the free, "starter" themes look awful. Themify makes beautiful WordPress Themes that are mobile responsive, and Gizmodo readers can now snag 2 themes of their choice for $19 - 67% off.
If you want to build your own website or improve the look and functionality of your current WordPress site, this promotion could be a good fit. Themify has some especially cool themes that feature parallax scrolling and flat design - very cutting edge.