[HPforGrownups] Re: Why Voldemort doesn't challenge Dumbledore?

[Jason Bailey]

No: HPFGUIDX 29180

M> What if the AK Curse not only kills the victim, but also tranfers the
M> victim's powers to the curser? If it does, then that would explain 
M> why Voldemort went around killing powerful wizards and witches (per 
M> Hagrid). That leads me to speculate that maybe Voldemort was getting 
M> more powerful in order to battle Dumbledore. Maybe absorbing Harry's 
M> magical power would have given Voldemort that little bit extra  to 
M> defeat Dumbledore?

I like this theory. It would explain why, when the curse rebounded,
Harry gained some of Voldemort's power (i.e. parseltongue).