Every computer program is composed of \'source code\'. Often times this source code is a closely guarded secret because if you have the source code you can build your own version of the program. In Open Source Software people make the source code public. This is done for a couple of reasons.
1) Allows many people to contribute to a project that may not have a chance otherwise.
2) Provides good peer review. Many eyes can spot more code problems quicker.
3) Often can provide more secure or robust code as people can see exactly what is going on.
We are also trying to make PS very customizable out side of the code. This is done through XML files where you can easily change your GUI and other things.
You should send any questions,comments, changes to us at PlaneShift. Fragnetics is the company that is hosting the game ( thanks!, go visit them at
http://www.fragnetics.com and buy something from them! ).