You are right. I didn't even notice that before you made this post. I wonder why they have restricted to get the WoF spins to just 1 a day.
At least 10 - 20 spins a day would be so thrilling.
It's actually restricted based on how much you wager. If as I did in the old days you wager a lot you can exchange 100.
I'm sure you can guess why a casino would do that.
Since, it is "freebitco.in" people sometimes think about this place as a way to make free bitcoin. I mean I do understand the logic, at first, I considered it that way as well, I didn't see this as a casino at all. For me this place was a place to get free bitcoins (satoshis) and as a side thing they also had a casino implemented as well, not a casino by heart but a faucet by heart at first. Then I realized that wouldn't work as a business, you guys would have been bankrupt long time ago if that was the case.
This is why now I do understand why you do certain things but that is of course because I understand the point of view right now, some people may still not understand it.
You can still make free bitcoins there. It is just, it became much much harder to reach the minimum withdrawal amount so clicking the button every hour don't make any sense anymore. That's why they are investing more of their time & money into their casino part. They used to make money from the ad givers but that model didn't last long...