I think it would be good if the client program kept count of how many successful uploads I had made. I guess this would be very easy to implement. I often check to see what's being uploaded, for no reason other than I like to think I'm contributing in some small way to the community. If I could keep track and it gave me a gold star or whatever (like on eBay) for 1000 uploads or whatever, I expect I'd be pleased to see that.

As a next step, that information could be transfered to Limewire and they could show a league table on their website.

None of this would solve the freeloader problem, but it would give a small reward to those people who do share files.