That's not the lesson I got from the article. The lesson I got was, "Don't charge money for your side projects." If you write some software as a side project an

That's not the lesson I got from the article. The lesson I got was, "Don't charge money for your side projects." If you write some software as a side project and give it away (as open source, or whatever), you have a much lower level of obligation to support the code. In the worst case you can tell the person complaining to fix it themselves and submit a patch.