How Does LV Communicate with Snape?

[lagattalucianese]

No: HPFGUIDX 148650


Vidar_Fe:
> 
> The dark mark?
> 
> - Just an idea. :-)
>
La Gatta Lucianese:

>From what we know about Voldemort, I doubt he bothers to communicate
with his Death Eaters in any very complex way. From the graveyard
scene (GoF.33), it sounds as if he just signals them via the Dark
Mark; any Death Eater who wants to stay alive knows to show up and
hear what His Nibs has to say. Bellatrix (HBP.2) chides Snape with
showing up two hours after the summons went out, so it sounds like the
DEs in general know to be Johnny-on-the-Spot when they are sent for.