The bad behaviour is a lot technical, but as I said see them as leeches (the animal) and other clients as fishes.
The core is 2years and a half old (gnutella has evolve a lot in the past year with dynamic querying and high outdegree -things morph totally lack, and the developper of GnucDNA doesn't want to work on it-) , their ultrapeers are elected even when on 56k (meaning the GNet traffic isn't routed, thus no morpheus UP results...) etc etc at infinite. Now seeing the result of the STUPIDITY of morph devs is easy: even with 50 000 simultaneous morph users and 10 000 gnucleus users, start either morph or gnucleus and then search, on the most sources results do expended info, try to find a morpheus result, repeat to another serch result. Having morph results is somewhat lucky to say the least
(if you see one it is from morph v3 not v4, hahaha) If you like P2P ban Morpheus from the clients you love: as simple as that. Now I don't want to talk more about "that".
MORe crap, MORpheus!