Hey, you might hear about the open source movement, where people in that
community build high quality software just for the joy of helping out and
of their craft.
craigslist is built on top of it, including:
(not a complete list, these are the main tools.)
If you're in the software business, and use these, please do whatever you
can to support the (sometimes struggling) groups.
We've just purchased new service contracts for some of these groups to
support them, and feel others might do so also.