Who Will Return As Ghosts?

[bohcoo]

No: HPFGUIDX 83060

Okay, recently we've been speculating on who is likely to die before 
the end of the series. . .

Taking each character you think will bite the big one, do you think 
he/she would stay around as a ghost?

According to Sir Nicholas, Sirius would never choose to be a ghost. 
At first I disagreed, but then figured that Sirius would probably be 
so happy to be reunited with James, he would stay "behind the veil." 

So. My thoughts:

For some reason, I think Ron would/will return as a ghost. The creepy 
part of that is, I have stronger feelings about him as a ghost than I 
do about him dying. . . with Harry as the only one who can 
see him. A strange thought, I know. (Do I sound like Trelawney or 
what?)

The second person I see dying and returning as a ghost is Snape. 
Wouldn't he be quite an addition to the group of resident ghosts at 
Hogwarts? Where else could he go, though, alive or dead, than 
Hogwarts? 

What do you think? Who would stay as a ghost-- and why.

Happy speculating!
Bohcoo