Utopian collectivism with a central computer is, unfortunately, still collectivism
Detached from the current monopoly of central bank notes, currency is just one of many means of exchange. The right to barter for both needs and wants is essential if individuals are to live in a society with any semblance of individual choice and basic freedoms.
Freedom of choice often comes with error and personal responsibility, thus there is no absolute utopia for those who believe in voluntary interactions. However, barring individuals from choosing to use currency and dispensing all "abundant" goods through a central computer is far from a favourable situation.
Beyond the monetary issue, I have also been disturbed by the views espoused by Joseph and Fresco concerning how families would cease to exist in this system due, in part, to overpopulation hysteria (See:
http://www.youtube.com/watch?v=hX9Ds_8jG38). If people were to spontaneously choose to stop having families for personal reasons so be it, but Fresco and Joseph suggest that this value would be trained into them through "scientific education." In this, I see TZM's methods as being no different from those used by countless totalitarian regimes in the 20th century