Dear Coursera, Thanks for all the free courses for the last couple of years. I understand the need to be profitable and make this a real business so you don't

Dear Coursera, Thanks for all the free courses for the last couple of years. I understand the need to be profitable and make this a real business so you don't have to fire all your good employees who have helped provide free education for so long. I for one welcome what you are doing - as I understand that's is impossible to sustain a free model forever. All the best!