Definition talk:Argumentum ad Hominem

The example given is not strictly ad hominem.

Besides,as an argument form it may indeed be valid. "National Enquirer? Don't believe everything you read in there." If a particular source has been demonstrated to be untrustworthy then it is indeed valid to raise it as questionable. We do it as part of our policy: on-line resources are (as a general rule) disallowed as citation sources. --prime mover (talk) 12:16, 13 February 2013 (UTC)