Get in touch
There is a public mailing list with the address firstname.lastname@example.org. To subscribe please visit the subscription formular or send an email. An online archive is also available to browse old messages.
IRC is realtime chat and from time to time you'll find some of Liberty developers or users in the channel #liberty-eiffel on the freenode network. If you do not have an IRC client handy you could give the webchat interface a try.