Maybe you should have a look at
http://www.limewire.com/index.jsp/size
if you wanna know why you can't find anything.
Limewire works, but the gnutella net needs more users!!!!
Did anybody talk to Morpheus/Musiccity yet? How are they going to implement gnutella in Morpheus 2.0? will it be a full featured gnutella-node? Or just a "freeloading app"?