One of the co-founders here. I must say, you are the first one to say that the tests are too easy. A significant number of our customers said just the opposite, that tests were on the hard side. That's not to say that you are wrong but since we're aiming for the mass market, I'll add your vote to the too-easy side and see what the stats will say at the end.

Thanks for the feedback.

To be fair, I only did that one test, maybe it just happened to be something I already knew well :) I'll be interested to see how it goes when you have some Ruby (or even PHP) tests on there.