I just came across Codewars on Reddit last night. I only had a short while to play last night but while it might seem like yet another Codecademy scenario, it's much more fun. You're given a problem and a set of test cases, you can only submit your code when it passes all tests. At that point, your code is put up for peer review with other players and upvoted on best practices and cleverness.
Also, for Android users on the perpetual go, there's a similar app called Hacked that's currently in closed beta but it's easy to join up. It's pretty fun as well..
Take it easy!
Hope that over time we have more people participate in this forum; somehow knowing that we all are in Gainesville and would have a chance to meet (and drink a beer together) makes it more interesting to me.
That being said, based on this post I decided to take a detour from my original personal development plan and practice up in Codewars (love that I get a "best practices" answer at the end). My old model was to build fun mobile web applications on a topic I thought was fun; but I started to find that I was doing things the stale way (wasn't learning a whole bunch). Will see how it goes.
@EranSch dope, thanks for posting this up.