What makes Drupal-powered sites great? Drupal-powered sites are more than brochures, they invite interaction. Drupal-powered sites can serve up visitors data of any complexity and when more is needed they can be extended to handle that too. They're easy for people to find with search engines. People who visit are likely to come back. And when more people come they still find a fast and responsive site. In other words, community, accesibility, and scalability.
This is what Sunny Day Online does to control Spam in Drupal 5.0 with anonymous commenting enabled. I decided to publish this here to share with the Drupal community and also with our staff.
1) Use FormFilter module to remove homepage field and preview button.
A) Download module from Drupal.org and install it to sites/all/modules (http://drupal.org/project/formfilter).
B) Enable FormFilter module in admin/build/modules.