Take another look. Some of those people are in places where allowing a browse
or an upload would be downright stupid.

In any case, gnutella is about sharing freely, not about tit-for-tat trading.
Allow people the freedom to share whatever they please or not at all, and
remember that many of those people who have nothing to share are just
starting out and will probably be able to in the future once they have
successfully downloaded some stuff they like.