Right now when I look I usually use Indeed and StackOverflow. I gave up on the big boys (Monster, CareerBuilder, Dice) because the sites are so polluted by recruiters and the filtering tools are so poor.

I'd love to try your scraper. I've thought about doing something like that before, particularly since I have started doing lots of web scraping for work and I am much more comfortable with it. Do you have any issues with sites that actively or passively discourage scrapers?