Rather than reading "How awesome Bing is", I'd rather know how exactly Bing is different than MSN or Live search. Also, didn't Microsoft acquire Powerset (comp

Rather than reading "How awesome Bing is", I'd rather know how exactly Bing is different than MSN or Live search. Also, didn't Microsoft acquire Powerset (company that 1 of the github founder worked for)? Any news about Microsoft integrating it to Bing? or Bing is a completely separate technology?