Good question. I tend to agree with the AVC article. In the medium term, the US economy is going to desperate for any productivity and efficiency gains. In thi

Good question. I tend to agree with the AVC article. In the medium term, the US economy is going to desperate for any productivity and efficiency gains. In this kind of market, this is sometimes one of the few levers. So I suspect start-ups in these domains will get a lot of attention - esp those around things like energy efficiency.