Mr. Derek Johnson

Sometimes students find answers to their problems before I can reply to them. This is a great thing. My more take-charge students even proactively answer questions from other students or users on this site. I consider this a fantastic complement to my course and have no criticisms of it. Their reputation system is strong enough to catch any potential pitfalls that become of social sites.

JsFiddle is great for sharing code and seeing how it works as you manipulate it. My students use this often when trying to help each other out on a problem. You can even save your work for modification later. I have had students turn in assignments on jsFiddle and I readily accept it. My only complaint might be lack of privacy options. However, since we work on nothing that involves sensitive data, and I instruct my students to stay away from sensitive data, this is not a real problem.

One of the best ways to learn how to program is to look at existing code. This site gives you that in spades. The color-coded editor allows students to quickly parse the code and manipulate it for realtime results. My only complaint is it is hard to find something specific. I have to hunt around to find relevant examples for my course.