The Privacy/Untraceability Sweet Spot

[georgemw at speakeasy.net]

On 31 Aug 2001, at 17:07, Eric Murray wrote:

> The various CDRs should deal with this-- they keep track of
> which Message-IDs they have posted, and don't post messages
> that they have already posted.  They do pass those messages
> on to the other CDRs that they peer with though, so by posting
> two messages you're adding to the number of messages
> that get sent on the "backbone"...
> 

Is it possible to set things up so that duplicate messages are 
filtered out based on a message digest rather than a message ID?
I'm dumb as a post and have no clue how message IDs are 
generated in the first place,  but it seems to this simpleton that
any hash function on the message body would be guarenteed to 
catch duplicate messages.

George