We actually pre-pay on that. Candidates get an initial call with a very senior person to start. That call includes coaching on how to get through our interview process, and concludes with us sending free educational material (books, etc.). This coaching and material is not specific to getting a job at Matasano, you can just as easily use it to get a job at one of our competitors. We invest hundreds of dollars in each candidate before we ask them to do our challenges.