A less than practical way to harness vacuum energy

In June of 2008 I wrote a post called “A “practical” way to harness vacuum energy”, in which I described the creation of near Planck’s length quantum foam as a way to harness vacuum energy. Firstly note that practical is in quotes, since it is not actually practical at all, but people love the concept of tapping vacuum energy. In the nearly 5 years since I wrote the post I have learned much about physics and quantum mechanics, and I realize that I am both right and wrong, but mostly wrong about what would happen.  There would be a huge number of particles and antiparticles created and destroyed, and a massive burst of energy, but the neutrinos would escape and for all practical purposes the system would be a spectacular experiment but highly endothermic and self quenching.   If someone could find a way to control the weakforce and capture the energy from neutrinos, and put it back into the system that could make it sustainable or even energy positive. However, if we had the technology to control the weakforce, we could do much cooler things than make a tiny quantum foam.