Possible changes:
* Unified authentication.
** Requires single domain for cookie validity. \*.openplanets.org?
** Could just use the [Crowd module for Drupal|http://drupal.org/project/crowd], and this will reduce the three accounts to two.
*** Crowd also supports other things, see e.g [http://confluence.atlassian.com/display/CROWD/Supported+Applications+and+Directories] and [https://studio.plugins.atlassian.com/wiki/display/JAAS/Crowd+JAAS+Login+Module]
** Ideally, set up LDAP properly, and validate all against it. Would work for servers, SCP, etc as well as web resources.
*** [http://phpldapadmin.sourceforge.net/wiki/]
*** Drupal: [http://drupal.org/project/ldap_integration], [http://drupal.org/project/ldap_provisioning], [http://drupal.org/node/396574], [http://drupal.org/project/extended_ldapgroups]
* Mailing lists.
** Use MailMan for traditional mailing lists.
** Use [Drupal Organic Groups|http://drupal.org/project/og] to set up mailing lists ([http://drupal.org/project/og_mailinglist]) for hosted Special Interest Groups, groups.openplanets.org ?
{gadget:url=http://bamboo.opf-labs.org/rest/gadgets/1.0/g/com.atlassian.bamboo.gadgets/charts/bambooCharts.xml|author=anjackson}useFavourites=true&planKeys=&reportType=com.atlassian.bamboo.plugin.system.reports:numberOfBuilds&groupBy=DAY&dateFilter=ALL&isConfigured=true&refresh=false{gadget}
...