Question re "little hint" in Book 2 of what is yet to come

[Caius Marcius]

No: HPFGUIDX 100786

--- In HPforGrownups at yahoogroups.com, "kljohnson7868" 
<kathleenjohnson at j...> wrote:
> Ok, I read that Rowling indicated that something "little" in Book 2 
> will be "huge" in the next two books. For the life of me, I have no 
> idea what that might be. 
> 
> Ideas?
> 

>From Chapter 13 - 

"And while Harry was sure he had never heard the name T. M. Riddle 
before, it still seemed to mean something to him, almost as though 
Riddle was a friend he'd had when he was very small, and had half-
forgotten. But this was absurd. He'd never had friends before 
Hogwarts, Dudley had made sure of that."

Why is Harry's initial reaction to Tom Riddle's name so powerfully 
positive? We have not yet been vouchsafed the slightest clue - was 
Voldemort in contact with Harry somehow *before* attempting to murder 
him? This seems to hint at the mysterious mental link between Harry 
and Voldemort that becomes so prominent in OOP. 

   - CMC