[nickporter]

I find that the "front-end developer" title is overloaded.

On one end of the spectrum, it means someone that can create and design UI mockups, and implement them using CSS and jQuery. For that type of job, asking algorithm questions makes very little sense. A strong portfolio would be a much better gauge of that person's skill set.

On the other end, it means someone who's able to engineer a web client using MVC frameworks and say, CORS. In contrast, algorithm questions make a ton of sense here.