Please visit the Partnership program page and add/contribute your ideas about starting a potential Tiki Partner program. It would be fantastic if this could be in place or coordinated with the Tiki5 release and new Tiki branding stuff.
Register at tiki.org and you'll be able to use the account at any *.tiki.org site, thanks to the InterTiki feature. A valid email address is required to receive site notifications and occasional newsletters. You can opt out of these items at any time.