Dangerous idea. The MAFIAA always interprets that as an inducement to piracy
and new users tend to be put off by what appears to be selfish barriers to entry.

Gnutella is a sharing network, unlike the trading networks like BT, DC
and others. The reason it is so successful is it doesn't attempt to force
people to conform to a tit-for-tat trading model, and that's why all of the
gnutella developers reject such measures as ratios and inducements.

The pool of available files is still growing but if you sit still on your particular
favourites you eventually see nothing new and see some of your favourites fade
away. The trick is to keep exploring and moving to other shelves in the library.