Critical Mass, an Omnicom digital marketing agency, announces three appointments to its management team to steward the agency’s growth on key accounts. In New York, Cindy Nelson, a seasoned digital and financial industry expert, will join the executive team as Senior Vice President, Group Director, along with Aaron Rosenberg as Vice President, Program Planning, while Ray Villares has been named Vice President, Client Partner out of the agency’s Chicago office. Ray Villares will serve as Vice President, Client Partner in the Critical Mass Chicago office. Prior to joining the agency, Villares leveraged his passion for interactive design and innovation to …