@Paul Choate
Point #1:
My objection is not that the general population of users would be unable to sort out the issues here, but that a new investor might consider the source (BP official blog) and not SEE the issues.
I am not sure that censorship exactly is the right way, but there is a definite problem with an official BP blog that includes ethical issues. Maybe create some way for a blog to be flagged as not endorsed but published as an opinion?
Point #2:
The part of the process that you are not seeing, I think, is that the seller is put under limitations by the contract before the added negotiations.
This isn't quite the same, because it involves an executed contract without contingencies, but maybe it will make the point. You buy a ticket for a cruise. Two days into the cruise, you pull into port and the captain says he wants to renegotiate. Fuel costs were raised last month and he needs more profit, so either pay an extra $500 per passenger, or get off his ship. Your choice, free will and all that. Is that a legit negotiating tactic?