RE: https://www.mediawiki.org/wiki/Extension:OpenID (manual page)
Just my few "meta" points:
if you should find bugs so, please file them here https://bugzilla.wikimedia.org/enter_bug.cgi?product=MediaWiki%20extensions&...
Open bugs are https://bugzilla.wikimedia.org/buglist.cgi?component=OpenID&resolution=-...
These links are also at the bottom of the info box (manual page).
Questions will certainly soon be answered by Ryan.
Tom (Wikinaut and maintainer of E:OpenID)