plusPHP Bookmarks and Web 2.0 Proxy

All-in-one script to organize social bookmarking site with web-proxy functionality to allow people to handle their bookmarks online and share them with each other + unblock sites through web-proxy interface (which has browse history). Users may store their bookmarks in tree-like structure with drag-and-drop editor. Site allow to have private profiles and bookmarks (aren't visible to other visitors). Site can be easily monetized without special knowledge: interface provides ads placement facility into special ads zones to maximize advertisement effectiveness and revenue. Script is heavily optimized for search engines.