GNU Enterprise seems to have developed a mainly IRC-based development culture, rather than the more traditional mailing list culture of other free software projects. A good deal of development and design has been taking place on IRC. Wheredevelopers and interested onlookers torture one another with ludicrous design ideas, or talk about other issues, either related to free software generally, or blatently off topic ;-)
Reflecting the international nature of the project, there are usually people active in the channel pretty much 24 hours a day, but it tends to be busiest in the afternoon and evenings, European and American time.
The irc server is located at irc.freenode.net port 6667 channel #gnuenterprise.
For those not fortunate enough to sit in IRC during development time irc logs are available. Today's log is at http://www.gnuenterprise.org/irc-logs/gnue-public.log and previous logs are at http://www.gnuenterprise.org/irc-logs/.