> relevant to the content the website presents Depends on your epistemology whether or not it's ad hominem. If you "believe" the content based because of the s

> relevant to the content the website presents Depends on your epistemology whether or not it's ad hominem. If you "believe" the content based because of the source's authority, then it is relevant to the content and is not ad hominem. But in this case, we hardly need to pass judgment on the source.