Users are wonderful things to have, and not just because they demonstrate that you’re serving a need. Properly cultivated, they can become co-developers. Treating your users is your least-hassle route to rapid code improvement and effective debugging. Linus Torvalds’ cleverest and most consequential hack was not the construction of the Linux kernel itself, but rather his invention of the. Linux development model, he smiled and quietly repeated something he has often said: ‘I’m basically a very lazy person who likes to get credit for things other people actually do””]
Source: http://www.catb.org/~esr/writings/cathedral-bazaar/cathedral-bazaar/ar01s03.html