Maybe this has already been posted, I did not want to read all the posts, however, many networks are moving to block access to any ports used by Gnutella clients. You might be able to change the port you are sharing to, but connecting to Gnutella routers on 6346 can be blocked, so why not devise a way to tunnel these requests through HTTP? I know other programs exist, third party, to tunnel requests, but a built in application of this technology would be awesome!