It's a great way to challenge and test your coding ability. It's fun too.

Pair programming Sharing is Simple and quick Supports various languages. Can create "skills tests" and share with candidates - who can work on these offline. I really like the feature where it reviews the solution and gives analysis. This has helped us narrow down the candidate list.

It's really simple to sue. They didn't overload the product with so many bells and whistles that it would be impossible to figure out or you'd need a training session. It takes about 10 - 15 minutes to figure out what's going on with absolutely no experience. Yet, there's still a lot of flexibility. Tons of environments to choose them and they all have the basic ecosystem installed. For everything that you'd think you'd need as part of the coding interview experience, it's there in a sensible way.