I went on an interesting job interview. It was another "We want you to work for free." thing.I was 99% sure before the interview, that they wanted me to work for free. I went anyway. First, I needed to go buy something. Second, there's always a chance that someone isn't clueless. Third, it's better than staying home all day.Here's a tipoff. If someone is in a "shared workspace", it's 99%+ likely that they want you to work for free. If they can't afford a real office, then they can't afford to pay someone to write their product for them.