Mailing lists are the superior way of communication between large groups of people, who may or may not be online & kicking the same time you are. We have different mailing lists for different purposes, but if you do not know where to go, please feel free to use our general contact email address at info@lists.ergo-project.org.
For a conversation about the Ergo Project with a little more bandwidth, please join our IRC channel on the FreeNode network, #ergo