Floo powder at Hogwarts

[Cindy C.]

No: HPFGUIDX 28034

Vicky/Kitty wrote:
>  
> > Clearly, they can travel by floo!  In PoA Snape calls Lupin to 
his 
> office via floo powder.  Since most every room has a fireplace, 
this 
> would be pretty good way to get around.  
> 

Amy wrote:

> I bet it's by invitation only though.  Whatever Snape sends to 
Lupin 
> (some kind of floo powder) summons him.  I can just see the scene 
if 
> Lupin tried to show up in Snape's office without permission--
yikes.  
> Probably anyone who tries showing up in Snape's fireplace without 
> having been invited hits 4-foot spikes on his/her way down.

I doubt we'll see a whole lot of travel by Floo Powder at Hogwarts.  
It would defeat the whole purpose of having passwords for access to 
common rooms, because amorous students could just Floo right into 
each others waiting arms.  And imagine the security concerns if 
students could just Floo out of the school straight to Hogsmead 
without a permission slip.  Filch's careful check of who is leaving 
for Hogsmead suggests Hogwarts is probably not connected to the Floo 
Network.

BTW, has anyone ever figured out how that "head in the fireplace" 
business that Sirius and Mr. Diggory do really works?  Is that Floo 
powder, or a charm, or a potion, or a form of apparating, or what 
exactly?

Cindy C (wondering if, in PS/SS when Hagrid tells Harry he "flew" to 
the rock on the sea, Hagrid really said he "floo" there and Harry 
misunderstood)