the box is blank where you can add an IP to force the connection to try a particular host. The 6346 is the default port, but can be edited if you know the host uses something other than the default.

I guess if you knew the IP of a particularly good host, you could enter it there. I recall using that to connect to a friend so we could browse each other's files, but the new "Direct Connect" in Search makes that old trick redundant.

email me if you want to try my gnutella.net file to see if that gives you a different set of connections.