It looks like codecademy.com really dropped the ball with their product. It's been a while since they released their MVP(emphasis on the 'M') and now they're being cloned left and right...while they still have yet to add a single lesson to their 30 minute introduction to javascript.
Congrats on rubymonk. I'll run through it in a bit.
What I like about rubymonk is it tells you what it expected when you give a wrong answer. Codeacademy on the other hand just informs you that you were wrong and gives an extra hint (can be annoying if you perhaps, didn't understand the question properly and hence leaves you stuck on that question).
Congrats on rubymonk. I'll run through it in a bit.