There is now "push proxy" on gnutella that does better job that 0.4 pushes.
The specs are available at the GDF:
http://groups.yahoo.com/group/the_gdf/
(you might need to join yahoo groups to get access to files)
Push Proxy version 0.7:
http://groups.yahoo.com/group/the_gd...P%20%28PPH%29/