They have great marketing on the forum, which isn't the same as having a great reputation.
Thank you for your comments. It's always good to be skeptical. I'm not going to get into the technical debate between you and TheQuin, but a couple of points:
It's not really a technical debate. LoyceV thinks provably fair is worthless because it wasn't made to do what he wants to use it for. It's not to help the Great and Good of the forum to decide which casinos are the goodies and the baddies. It's for each individual customer to use to find out for themselves.
I edit to say one thing I forgot: my biggest reason to believe in the honesty of freebitco.in, apart from the time they have been around, is that with the userbase they have they already make enough money by running an honest business without getting in trouble and ruining their reputation by cheating.
If someone shows me proof that they are cheating, I will believe it, but until then, if I have to choose between believing them or a newbie, I will believe them.
As I was trying to point out here it's really not about reputation, that's in the eye of the beholder.
Provably Fair wasn't created to be a tool for The Forum Police. It lets customers find out if they are cheated. Even if all they can do with that information is decide not to use that site again it's still vastly superior to options 1 and 3.
If any provably fair site started cheating they wouldn't have any customers left in a very short time.