Yahoo visited my university for a tech talk. I was finally set up for a single phone interview approximately a month after submitting my application. The interview was one hour long, and the interviewer was very pleasant to speak with. After 3 minutes of speaking about one of the experiences on my resume, we began the algorithmic questions. After I devised and wrote my solution for each problem, there was a follow up question about where the solution might fail and require modification (e.g., in a multi-threaded system). These questions, while seemingly benign, were used to indirectly test my computer systems knowledge. Unfortunately, Yahoo's interview process seems quite slow.