Michael, my review of Jabber is mostly conjecture. Other than the fact all of my clients crash regularly (which isn't the server's fault) but sometimes I have a hard time connecting to any of the public Jabber servers.
Also, it's not totally ready for prime time. For instance, it still doesn't have HTML support for in-browser chats. I think that's a rather important thing for a system like OpenACS. Eventually they ought to have it and better things like Voice over IP, but until then I think it will be a little short for IM.
However, it seems to have a lot of potential for an XML alert system. I'm more interested in seeing Jabber integrated so that we can take advantage of Jabber in creative ways.
talli
