A Question for Animal Ethics Readers

Please read the post by Megan McArdle that Keith linked to in his post from yesterday. Then, click on "Comments" below to answer the question that Keith posed on his personal blog:

Has anyone out there met someone who was persuaded to give up eating meat as a result of an argument?

I'd love to know whether philosophical reflection and argumentation has had an impact on your moral attitudes toward animals or on the moral attitudes towards animals of someone you know. Let us hear from you. Thanks.