22a2b88b_on_of_XMPP_Jabber_IRC_and_PSYC__0
[IRC] single-tree multicast per network [XMPP (Jabber)] none (very inefficient) [PSYC] per-channel multicast [0] 
One-To-Many Distribution Strategy
PSYC Comparison of XMPP Jabber IRC and PSYC
0