First of all I really appreciate your comment at my post and its seems that you read each and everything carefully in my post and after that you write such an extensive comment but really I agree with you that either it is very beneficial and profitable for all of us but if I talk about its risk then it should be done with question because in risks there could be a great loss that we have to be here if it would be done without research so I wish you success in this engagement challenge and soon I would be also entry to visit it