Transplanted from another post from a week or so ago. What do you think??:

Voldemort is def. the heir of Slytherin and he hasn't got any kids (Jo said) but what about Harry being the heir of Gryfindor?? We know from the sorting hat that there was great contest between Godric and Salazaar, so what if the battle between Voldemort and Harry is a continuing of that conflict??

Hey, this might be the tie to CoS!!!?? Remember that Jo's said that there's something that Harry discovered in the CoS book that will relate to the last books ? What if it is the things that Harry discovered in CoS were:
1) that Voldemort is the heir to Slytherin and
2)Harry really belong in Gryfindor and
3) MAYBE, that Harry belongs to Gryffindor (pulling the sword from the hat)
and these discoveries 'foreshaow' that Harry is the heir to Gryffindor and therefore, Voldemort and Harry have been destined for centuries, to fight it out. ???