Fangraphs takes a pretty big exposure risk with doing the Board. The amount of information they endeavor to display can only serve, at times, to highlight the fact that they just do not have the manpower to truly verify all of that information. It's inevitable that they will miss grades, screw up ETAs, rank certain players horribly wrong.
That's not to say there is anything wrong with what they are doing! The reverse is perhaps even more annoying - the all text top 100 lists that don't even attempt to describe the tools of the players, so the list contains zero granular data other than the order of the prospects. That's even worse.