Okay, wasn't bothered to read over the whole thing but essentially you are saying that poloniex's physical address listed on their site isn't occupied by anyone related to them at all? Or am i missing something here?
If i'm right, do you have pictures of the said building being occupied by whatever companies that you pointed out in OP?
This could be a major finding if it turned out to be true, as poloniex is in constant struggle to process deposits and withdrawals. Their customer support is almost non-existent if something goes wrong.