No problem mentioning the others: to see a list of vendors that connect to the gnutella network right now, look at http://www.limewire.com/english/content/uastats.shtml

Gnutella is open to all. Limewire has become a leader among the vendors, but is not the only legitimate vendor. So you'll be sharing with quite a few others, and downloading from them too.

In fact, if you run as an Ultrapeer, LW makes sure at least two slots are allowed for non-LW connections, so new developers and others don't get excluded.

cheers