HN user
I think the poster was referring to Charlie Miller's CSW 2010 presentation, where he finds a number of trivial, exploitable vulnerabilities in Preview. You can see the slide deck here: http://securityevaluators.com/files/slides/cmiller_CSW_2010....
39, typically anywhere from 25 - 75 if I'm working on something that requires me to do a lot of web research.
It's a shame you didn't take the opportunity to gather ZIP codes. That would allow for some adjustment of your salary figures based on avg income modifiers for an area (hell, you could use the GS modifiers the Govt. uses even for ease-of-use).
But this is a great idea, I commend you on the experiment!
Hmmm...they modified netcat? I wonder why? Will have to take a look later.