dd booboo

[Dave Smith]

Michael Brailsford wrote:
> You should run shred on it.  dd if=/dev/zero...  is nowhere near as thorough as shred.  Not saying that the typical person shopping at DI will have the know how to read a drive that has been zero'd, but I'd rather be safe than sorry.
>   

Correct me if I'm mistaken, but given that it's a flash drive, isn't dd 
enough? I realize that with platter-based disks, magnetic spill over and 
residue can be read later to recover deleted data. But with a flash 
drive is this even possible?

--Dave