The thing I never understand about those tests is, are they testing math or programming? Programming mostly requires skills that go far beyond the mere ability to crank out algorithms to solve abstract math problems.<p>I think there is a niche for somebody to build a developer testing service that is more rounded out, that seeks to test for skills such as code quality, architecture, breadth of experience, etc.<p>Implementing such test might be technically and logistically more challenging, but any effort that goes some way towards these would be worth it.