> Be mindful of Joel's bias (he's a CEO, not a developer).
Sorry, but this is ridiculous. Spolsky has built his career around promoting a good work environment for developers. After reading his blog for many years, listening to his talks and podcasts... he's either an extremely talented thespian, or one of the most conscientious people in tech.And, while everyone has bias, I seriously doubt Joel and StackOverflow worry, or have any need to worry, about employee side-projects. They seem much more interested in employee retention.