it looks like poloniex is digging for clams and also it sells it on the market. Imo this is a huge conflict of interests... Maybe they are the misterious digger.
Just curious if you can say what the conflict is? As I understand a conflict of interest, it's when someone has two (or more) competing financial interests: for example, say I am hired to regulate the oil industry in the name of the public interest and say I hold massive amounts of stock in that industry---here promoting either of my interests has a direct cost to the other. Or say, for a smaller scale example that I am paid to police the forums and mark scammers with negative trust and at the same time I sell accounts for a living---clearly neg-repping many accounts bumps the value the accounts I sell.
In your case, poloniex sells clams, so like any other clamholder they have an interest in getting a good price on the clam they sell. What's the conflict? What's the other interest?