I don't know if someone posted this but here goes.
I think that LimeWire should be able to search many servers at once. I have many programs that do this, but they are slow and sometimes crash trying to download files. When i don't get a file that i'm looking for in LW i think that another server might have. I know that this is not likely going to happen because LW is controled by Gnutella Network and must only stick to it. It's still a hope.