[Double06]

Oni is right, won't stop the mindset of an exit-scammer or people who would build up their market reputations through rigged exchanges.

What about an automated scripted middleman?

Many questions come into line with such a proposition starting from logic and ending to anywhere near vulnerabilities. (Frankly might be too much work)

It's just a very vast idea thrown out there but for example: BTC > Product (exchange).

1. User X sends BTC to Sinisterly's automated middleman account with username's field address (seller to PM).
2. Bot confirms amount received with a simple blockchain verification process and sends User Z a PM with successful received funds.
3. User Z (seller) sends product to User X (buyer) (through Sinisterly PM).
4. If User X (buyer) is satisfied he can release the funds with a button.
4a. If User X (buyer) is unsatisfied he can freeze funds with a button. (freezing them for a moderator to step in and examine the situation to prevent scam).

This is just a very general brief idea of a potential idea. Feel free to add along.