The forum being implemented for Appropedia (April 2007) should meet these requirements:
- Open source
- Email notification of replies. (phpBB does this - e.g. http://forums.permaculture.org.au)
Desired features
- Single login
- http://www.mediawiki.org/wiki/Extension:AuthDrupal
- Ability to easily link between the forum and the wiki
Possibly desired features
- Replace talk pages with forum pages