"... there are benefits to posting code online that they can review..." In most domains, code is proprietary. Few ask for code samples because unscrupulous in

"... there are benefits to posting code online that they can review..." In most domains, code is proprietary. Few ask for code samples because unscrupulous interviewees could reveal proprietary code, potentially opening the company to legal liabilities. I make it a point not to read code that interviewees supply because I don't want to be sued by XYZ company because of code theft. In my industry, it has happened many times. Google "Sergey Aleynikov" and "Misha Malyshev" for an example of what can happen.