If you think your life is several hours longer than it should be and you want to waste those several hours the most useless way possible - then interviews with these guys is definitely the way to go. I spent more than 3 hours on 3 interviews with them, answered all the questions they asked without any fails and just got rejected with perfectly impersonal email, without any feedback. Thanked them for the interviews and asked them for a feedback but just got nothing. Truly negative experience and very bad attitude to candidates.