Ask HN: What is considered an 'acceptable' wage?

First for a software engineer/programmer/developer, then in general?

Because I've seen a lot of different figures bandied around recently, and it's made me confused as to what people would class as a fair salary now. Obviously there's a difference based on the area, with places like London and San Francisco requiring someone to earn more than a small town in the middle of nowhere might.

So what would you say is an acceptable minimum here? $30,000? $50,000?, $100,000? Over a million?