Both. There is a paid team & there are also contributors. et voilà would be the best to fill you in there.

Salut, there are a couple of paid LW devs (developers on this page) http://www.limewire.com/english/content/team.shtml

There are also open source contributors like Philppe Verdy, Rogerk, Gregorio Roper and other that contribute to LW pieces of code named "patches". They submit them here http://www.limewire.org/mailinglist.shtml

LW is also offering bounties for open source devs if they implement some features in LW: http://www.limewire.org/wishlist.shtml

If you have more questions, ask

Ciao:p

Thanks heaps Et Voila. That makes perfect sense.

Stu :-)

New developments
 

This is an interesting development: http://www.gnutellaforums.com/showthread.php?t=58601