Malfoy/Snape

[heath143harry]

No: HPFGUIDX 70678

This question has been bothering me since GF but became more 
pronounced after OoP...so any opinions would be appreciated. :)

Surely Voldemort knows that Snape betrayed him - he says that he will 
pay in GF (graveyard scene), correct? Therefore, wouldn't Voldemort 
pass this information on to his Death Eaters - Crabbe, Goyle, and 
especially Malfoy? Which leads to my main question: If the Death 
Eaters were aware of Snape's betrayl, why would they (or their 
children) be so buddy-buddy with him? I also wonder why Voldemort or 
one of the Death Eaters hasn't dealt with Snape at all? 

Thanks very much. :)