As far as I remember freebitco.in is the most longest faucet sites that is still running and paying. If the question is: if you can trust this faucet sites, the answer is "yes" as it's still paying as of today. Try to check out their maybe somehow official thread here (https://bitcointalk.org/index.php?topic=319540.0) and to see what you'd like to know more, it's still active and there's a contest of their called "win a lamborghini" that has ended in past few days.