At the moment the use of the tool is FOR FREE and without any obligations. I invite you to experiment and participate and your feedback, tips, suggestions will be much appreciated and used to upgrade the program..
With your registration you will get an expiration date for the free usage of the room.
Eventually, probably early 2010, a contribution will be asked in order to continue the usage of your private "room" after the expiration date.At which moment you will be totally free to decide if you want to continue or not.
In the meantime explore, experiment and play with the tool!