When PirateShip was made, I decided to release it under a license similar to the GPL, but I didn't want the program to fragment as it has alreay happened so many times in the FOSS world. Also, it's my wish to keep certain control over the program, such that one day, if necessary, I may sell it (even doing it voluntarily, time is money).
That way, I created my own license, called Ronan License (very creative, isn't it?). This license, to avoid a lot of legalese, was created over the terms of the GPL, with the following conditions: