You could try http://www.peerweb.org but it's not really a site for LimeWire (most of the links should work though).

Unfortunately (IMO) there doesn't seem to be enough demand among LimeWire users to create such a site yet. I tried to set up a link forum a while ago ( http://www.magnetdb.com ) but it turns out I don't really have the time to maintain it properly.

I didn't find anyone who is motivated enough to make something of it yet...