I know Weisshaupt will rail at the use of Keynesian vs Neo-Keynesian terms, but in terms of discourse the difference is moot, since long ago leftists chose Keynes as their economic champion. If some of JMK's theories were left out by the leftists when they embraced him is between he and they, I am more interesting in beating the leftists over the head.
This article by Jim Quinn nails the coffin shut on the leftist Keynesian model IMO. Check it out, decide for yourself. I have serious doubts if there is enough courage and will in officeholders or the electorate to prevent the end that this nightmare guarantees...
http://www.zerohedge.com/news/guest-post-keynesian-solutions-after-total-failure-try-try-again