Joey Hess firstname.lastname@example.org is the author of git-annex. If you need to talk about something privately, email me.
The forum is the best place to discuss git-annex.
For realtime chat, use the
#git-annex channel on irc.oftc.net.
You can also watch incoming commits there.
The VCS-home mailing list is a good mailing list for users who want to use git-annex in the context of managing their large personal files.