I'm not sure about that. Buying bonds is merely one of many mechanisms to stimulate demand in the assumption we are in a demand poor crisis. Demand in Greece is sooo depressed because of the enormous debt that relieving it at all will have a positive demand experience.

Add to which Keynes original idea is to bury the money in bottles and any form of monetary supply increase is good.

I think I agree with downthread - finances as a form of control - it's a banker mentality.