Organizing social bookmarks by pearls is what is giving Pearltrees its name. The social bookmarking service is introducing a new concept enabling to get bookmarks more organized. Instead of tagging, which often has a different meaning to different people, the bookmarks are located in pearls. These pearls are in some way containers for particular topics and may become shared and connected to pearls of other users. At all the connected information may either be strongly associated and additional or will build a tree of clusters connecting supplemental information. Furthermore the service is offering social networking facilities including to discuss the content and the connections. Also it has an integration to other networks like Twitter and enables to import already collected information.