If any of these sites have any insiders, it's most likely just people browsing the forums and not ever posting. Even then, it's probably to see things like "will it be profitable to make Marcus Smart a featured jersey?"
Even further, if someone is making insider claims that happen to be correct, there are lots of people who are doing the same thing that aren't correct, so at that point, who cares? There is no legit way to filter them out.
