The guy in the live chat said they look negatively on large numbers of submits. I think this is a poor idea for two reasons. 1) This will simply encourage people to develop offsite and submit when they have working code. On their site they allow recruiters to see what applicants are typing in real time, and pushing people off site will render this function useless. 2) In interpreted languages like python my work flow…
I think this kind of extra testing could be detrimental because it's going to stress people out. Give a hacker a fun challenge and set him to work, he'll probably do it better and faster than if you set him in an empty room with a big timer and people scowling at him.