del.icio.us has launched a new and improved add-on that integrates del.icio.us into the Firefox web browser. There are over two million del.icio.us users. ” From the new sidebar you can sort and search your bookmarks instantly, view tag intersections, and even modify your bookmarks,” the del.icio.us team writes on their blog. For more info from the del.icio.us team, visit the del.icio.us blog. Here is a quick tour of the new application.