In this section, there is a list with the version of SMF that your forum is using, the current version of SMF that is publicly available, and information about your host. This includes what version of PHP they are using, the database scheme (MySQL, PostgreSQL, or SQLite), Apache, and GD your host is using along with the PHP accelerator. If one is installed, the version of the accelerator that is being used is also listed.
Also displayed here is the recent Common Support & Issues. This comes directly from the Simple Machines website. This section lists common issues with SMF and what can be done about them, in order to be able to fix them if they are ever encountered.
Located below that, is a list of some of the people responsible for the current version of SMF that is installed. This is only a partial list, because everyone that uses SMF and suggests new features or reports bugs that they have found, have helped make SMF what it is today.