[yelnatz]

That's the whole point of kaggle. ;)

Fighting your machine learning algorithm against everyone else's. Best one wins the prize.

There's a lot more "interesting" competitions from different companies of course.

https://www.kaggle.com/competitions

[Maxious]

This competition is the first "Playground" one just for fun http://blog.kaggle.com/2013/09/25/the-playground/