The document discusses three social media applications that could be used by a leisure center: YouTube, Hootsuite, and Wikispaces. YouTube allows users to upload videos for others to see and search, which could help a leisure center demonstrate its facilities and classes. Hootsuite integrates multiple social media feeds into one application, allowing a center to efficiently manage social media and track engagement. Wikispaces is a collaboration software that a center could use as a knowledge base for staff or to track internal projects.