Great idea to revolutionize private servers?

So i setup a RSC private server from divine pk source and noticed that it uses mysql for its database and i thought; Would it be possible to read players from an external site other than localhost. i.e. I setup a simple website that has mysql and if you want to play on a private server you have to sign up. Then it saves the username, password, stats, etc to the mysql database. and whenever a private server is opened it sends a command to the website saying that it is online. Then the website will display the IP/PORT so anyone that wants to play can just type it into there client. Once the server realizes that certain player is trying to connect it gets the information from the mysql database on my website.

Good idea or Bad?

 

i like it though i think its been done. but good idea anyways

 

Where is that website?