It's nice to see this taking the e-mail whitelisting approach, that is be aligned with one of these large corporations or we don't care . What's to stop someone from purposefully giving bad advice for his amusement?
An expert can only be an expert on a repository that they have a history of contributing to, so I would hope that that would have an effect on the advice they give. If they still chose to give bad advice then I would be disappointed.