Anionic polymerisation techniques offer powerful methods for the controlled manipulation of macromolecular architecture, and are still today unique for the synthesis of a wide variety of model polymeric materials. This book presents current research data from across the globe in the study of polymer initiators including: advanced organocobalt initiators in radical polymerisation; surface-initiated polymerisation techniques; citric acid and biopolymers; oliogomeric azo-initiators for grafting of polymers on clay surfaces and photopolymerisation.