single sign-in (not sure if JIRA is the right project)

When navigating the atlassian demo and support sites I needed to register independently for all the above sites. A much improved user story is to provide a single sign-on that is valid for ALL the atlassian sites. As a potential customer for JIRA and Confluence, I am hoping that I can provide the same for my users - where a single registration, userid can be used across JIRA and Confluence apps seamlessly.

I am not sure if the the JIRA project in the Atlassian JIRA or OSUser in the OpenSymphony JIRA is the right place to report this...