On Thu, Nov 04, 2004 at 03:01:15PM -0800, "Hal Finney" wrote:
> Another idea along these lines is gradual payment for gradual release
> of the goods.  You pay 10% of the amount and they give you 10% of the
> source code.  You pay another 10% and you get the next 10% of the source,
> and so on.  (Or it could be nonlinear; maybe they give out half the code
> for free, but the final 10% requires a large payment.)  The idea is that
> you can sample and make sure they do appear to have the real thing with
> a fairly small investment.
> If there is some mechanism for the seller to have a reputation (like
> Advogato's perhaps, with some spoofing immunity) then the problem is
> easier; the seller won't want to screw buyers because it hurts his rep.
> In that case it may be reasonable to ask the buyer to pay in advance,
> perhaps using the partial payment system just discussed.

The mojonation file sharing system had an implementation like this

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A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

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