According to the owner, they are currently adding new sites, and they are manually reviewing those casinos. They will later check those websites by playing and testing withdrawals as well. Also, when they launch the 2nd version of their website, users will be able to report anything, such as the website is not operating, scam, or other things.
I found this initiative as unique. I haven't seen such website before. So, I expect them to stay around and I think I will be one of their regular user. I hope they won't close the website suddenly.
It is like an encyclopedia for online gambling sites that is helpful to have a long list of available casinos. From this list, you will have less chance of missing available online casinos but you will have to do next steps for your due diligent research and even own testing before you can review those sites, what are better and safer to use for your own fund for example as well.
With this site, it makes job of signature campaign managers more easily for finding hidden gems in online gambling industry, though they will still do many further checking steps.