I was approached by Google through their foobar challenge. I thoroughly enjoyed working through the levels of the challenge (I got through level 4) and actually learned few things in the process. But everything after that was pretty terrible. First, through all of the exercises in the challenge, I had already provided them several hundred lines of code that I had written specifically for Google. But then they still wanted me to do a phone interview with a virtual 'whiteboarding' session. Which basically amounts to writing code in a Google Doc. Which is something I have never done, and never will do ever in any real life situation. I have written code almost every working day for the past 20 years, in a variety of different languages. I have designed and led teams building web applications with dozens of classes and thousands of lines of code. But I have never written code in a word processor program. So in the phone interview I was pretty slow, and due to that slowness the interviewer concluded that I did not know how to implement a fairly simple Java class. It was demeaning experience and a complete waste of my time.