Pinboard is a social bookmarking website that allows users to save and organize links to web pages. It provides a simple interface for users to create a personal collection of bookmarks, which can be tagged for easy searching and retrieval. Users can also share their bookmarks with others or keep them private. Pinboard supports various features, such as archiving web pages and integrating with other services, making it a useful tool for researchers, students, and anyone looking to manage their online resources efficiently.