Are there any mailing lists where I can ask questions about JavaSpaces?
There is a mailing list just for JavaSpaces. To subscribe, visit http://archives.java.sun.com/archives/javaspaces-users.html and follow the instructions there.
Because JavaSpaces is built on top of Jini, many JavaSpaces questions involve Jini. These questions are appropriate for JINI-USERS mailing list. See http://www.jguru.com/jguru/faq/view.jsp?EID=9770 for details.