The fact that a site has been online for a long time says nothing at all. They do not have a gambling license and therefore it is easy to make victims, as you will not be able to get redress anywhere.
If the site is legal, why isn't there a gambling license? And where are the company details?
Honestly license was never a "requirement" for anything at all, because they do not save the gambler, they defend the casino hence I never really trust licenses. Do not get me wrong, there are few places with licenses that I really trust, but there are plenty (and I mean PLENTY) of websites with license that I would not trust with my 1 dollar, let alone with running a casino and there are tons of people who fall for them.
Remember there were scammers in this line of business with licenses that took thousands fo bitcoins from people in many different ways. So, freebitco.in is more trustworthy than a license can provide, hell if another casino got the vote of confidence from freebitco.in instead of curacao, that would be a lot better for me to trust them to begin with.