The document discusses the author's use of social media platforms Facebook, YouTube, and their Galaxy S3 phone to share various media types. The author posts photos, videos and music to Facebook from their phone or YouTube by searching for content and sharing it. YouTube allows searching for videos to share to other sites via a share button. The author's phone allows accessing Facebook and YouTube to share photos, videos and music, or finding shareable content on YouTube and posting it to Facebook with a tap.