What Kreacher knows

[snapesmate]

No: HPFGUIDX 74124

I know it has been mentioned that Sirius kept Kreacher around because 
he knew too much, but I do not know if this subject has been 
discussed yet...
I was just visitng a Snape website and stumbled across a statement 
that I had never (don't know why I didn't think of it myself) 
considered:  Kreacher knows Snape is a member of OoTP...  will he 
tell Narcissa Malfoy now that Sirius is gone?  Not to mention any 
other information he may have collected about the OoTP.  He betrayed 
Sirius when he was alive so it seems he would do anything he could to 
be a good little house elf for any surviving family members, 
particularly the foul ones he adores so much.

"Lynne"