Goldbach partitions code

Folks,  

I put up a brief note describing my naive attempts to compute Goldbach 
partitions, starting with a brute-force approach and refining 
progressively.  

http://jostamon.blogspot.com/2009/02/goldbachs-comet.html  

I'd welcome your suggestions on improvements, alternatives, other 
optimisations, esp. to do with space vs time tradeoffs.  

Is this an example interesting enough for pedagogical purposes, do you 
think?  

Please advise.  

Cheers,  

MM