Where are you posting the article? If you're creating a status update on your profile page, and including a link to the article, the comments won't attach to the actual article. The comments would then be for your status update which may, or many not, be about the actual article. The comments are for whatever content the user is commenting on, and in that case, it would be your status update, not the actual article.
There's no way to have a status update's comments 'push' to any links that may be referenced in the status update.
Hope that explains, but if you're doing something else, let us know.
Thanks,
Alex