Well, in my opinion, freebitco.in is only worth it if you have quite some time on your hands and want a very small amount coins. It has been around for quite a while, so you can have some sense of trust in it (maybe).
I agree, you can only make a decent amount of money by getting lucky. On the other hand, the few satoshis that you'll usually get can be useful for a beginner to play with and to test out the Bitcoin system (how to send transactions, etc.). But if you are looking to get rich, then pretty much all faucets, including this one, are a waste of time as you can earn much more by just working a minimum wage job.