Social bookmarking allows users to save, organize, and share bookmarks of web resources online. It involves registering with a social bookmarking site, storing bookmarks and adding tags. Some benefits are that anyone can participate, it is easy to use for collecting resources to share, and it simplifies distributing reference lists. However, tags are user-defined so classification may be skewed. Social bookmarking also involves storing data in another online location. Emerging technologies like social bookmarking are changing how lifelong learning occurs by changing how data is accessed and shared.