Great piece by Frank Denis ( jedisct1) on the challenges of taking your code open source and the overall entitled attitude of people using your open source code for free - and expecting free support:
"It doesn't work".
Denis is an amazing builder and maintains multiple powerful and important open source projects:
Open Source Social Network. Focused on technology, networking, linux, privacy and security, but open to anyone. Civil discourse, polite and open. Managed by the noc.org team.