[quote=Corsair]
If I can be a bit of a pedant, only the secret-keeper of the Fidelius Charm can pass on the secret, it doesn't work if other people do it. That's why they had to give Harry a note personally written by Dumbledore so he could find Grimmauld Place.
[/quote]

This is true. I got out-lore'd... I may need to take some time to get over this :P