I've looked at the github repo (for the Java server at least) and it looks like nothing was done for more than a year now, and this list is also kind of on the quiet side.
I've just encountered this project on the web and it seems rather interesting as a messaging solution that I can offer some clients of mine, but I'm not comfortable jumping onto the wagon while its on its last leg.
Is there still ongoing development, or has BuddyCloud entered the dreaded "maintenance mode"?