The FAQ actually lists the following points, about the questions that are not welcome here:
- Comparison between Drupal and other CMS's, blog software, or similar software
- Requests for tutorials, and other online resources
- Building a site from scratch
- Issues found in existing modules/themes
- Issues about drupal.org, or any of its sub-domains
- Recommendations for Drupal hosting
As far as I can see, this list is complete.
Is there anything that needs to be added? Did you see any questions that keep to be asked, and which are then successively closed because they aren't good questions for Drupal Answers?