I'd be interested to know what people think about coding pre-screening tests in general. As is obvious from my profile, I'm working on a startup trying that helps companies and recruiters easily implement coding tests to weed out people who can't code. This is a bit different than asking someone to whiteboard a solution - we're aiming to help companies get from a few hundred resumes to the top 10 or 15. We've commonly heard the problem (and experienced it first-hand) that people can't code, and we think coding tests helps solve that problem. I think it's a better solution than going by your past experience, because that's often fluff.