Southwest Airlines has established a strong presence across multiple social media platforms including Twitter, Facebook, YouTube, Flickr, and their blog "Nuts About Southwest" to engage with customers and promote their brand. They use these channels to provide customer service, entertainment, discuss travel experiences and share deals. Southwest has over 1 million Facebook likes and their Twitter and blog are recognized as leaders in their industries. Their approach aims to create customer loyalty through an interactive experience across various media in a fun, casual tone that fits their culture.