Microgels by Precipitation Polymerization: Synthesis, Characterization, and Functionalization, by A. Pich and W. Richtering* Hydrogels in Miniemulsions, by K. Landfester and A. Musyanovych *Nano- and Microgels Through Addition Reactions of Functional Oligomers and Polymers, by K. Albrecht, M. Moeller, and J. Groll*Synthesis of Microgels by Radiation Methods,  by F. Krahl and K.-F. Arndt*Microgels as Nanoreactors: Applications in Catalysis, by N. Welsch, M.s Ballauff,  and Y. Lu