This is valuable. Thank you for creating and posting it.<p>First, it's an excellent reference for people who don't really understand technical "interviews" and their exam-like nature. Most interviews in other fields do probe knowledge, but interviews in our fields really are exams.<p>Another factor is that there's very little knowledge of information out there. We take these exams under conditions of secrecy, with very little feedback. For example, there are scores for my performance on interview exams in a database somewhere at google, but I'm not allowed to know how they were judged, who scored them, or what the scores are. I actually don't know what would be considered a good or bad performance. This site helps me get a better sense of how these are conducted and evaluated.<p>From a business point of view, it's also clever. People really do want to get feedback, the kind they can't get from Google or other interviewers, in part because of liability issues. So by providing an area to practice, the placement site can identify people who are most likely to get through the technical interview - which means they are most likely to place candidates. Not bad.<p>That said... I'm still not surprised that people who have the skill and focus to become software developers take a look at how tech interviews work and decide that they would much rather work in a different field.