Pinola is a travel mapping application that allows users to share and discover places they have visited. It works by letting users post places they have been, complete with photos and descriptions, which are then displayed on a map for their friends to see. Users can follow friends whose travel taste they trust, and their posts will appear on the map. The application also allows users to save posts into collections and share them with others, making it easier to plan trips. The map displays a living diary of everywhere the user has been, and users can switch between a real-time feed of new posts and a full map of all posts in a given area.