I believe that there is a distinct difference between formal and informal fallacies and how they should be dealt with in a debate. I agree with many here that

I believe that there is a distinct difference between formal and informal fallacies and how they should be dealt with in a debate. I agree with many here that just pointing out fallacies does not advance the debate, however I believe this only applies to informal fallacies (which are often much less clear cut). To me informal fallacies are often just poor debating style. However formal fallacies should absolutely always be challenged, because the make the argument formally invalid (non sequitur).