It is not about the competition, it is merely about the fact that I do not have billions of dollars at my pocket. I am a programmer and I have created a service that worked without any substantial issues for nine months, I guess hundreds of people used our mixer and I believe the service may work in this way for a very long time. Five of six times people sent us more than we can handle and every time I returned every Satoshi back to its owner.
Unfortunately, I do not see any more sense in a continuation, I spent too much my own money for this project. Only the sig campaign for a week costed around 0.2 BTC, which was a half of my initial mixing reserve. It was a lot of joy to work on this project and I am happy about this experience, it benefited me in numerous ways. However, my decision is to offer the donation for customers and if none comes just close the doors soon after 5th November.
Peace to everyone.