Everyone is getting too caught up on the idea that this would remove merit. I would consider it more like a newbie flag, but rather than being placed on a person it would be on a post. If the post was filled with false/misleading information then it should show up as tinted/slightly red if whomever(s) can activate this button/option use it. I'm just throwing ideas out there but this is why this is being discussed.
Drop the idea that this removes merit from someone's post/account and lets discuss a way to stop misleading comments from parting newbies and their money. A LOT of people don't read whole threads, those that do should be able to protect a little better.