Wait a sec, a blogger goes to great pains to state that he won't shill for a company that's paying for his trip to a trade show. He verifies that this is okay with the company several times, and states categorically that he will cover other products and be impartial about Samsung's, repeatedly.
How does this "raise larger concerns" about these blogs? It seems like the blogger here has gone out of his way to ensure that his impartiality isn't challenged.
This sort of behavior - from Samsung or otherwise - is despicable. They need to be held to full account for this sort of fraud.