Maybe it is not a good move to write in other's mixing services ANNs, however in the light of the last events we cannot name bitmixcoin a mixing service. It is most likely a scam adventure.

You know, for me this is a remarkable incident. I tried so hard to build my own service and still put a lot of effort in it. Unfortunately we have quite poor reserve and it was 2 times already when people sent us more coins than we can handle. It is a pity that people trust us and we cannot handle their requests properly. I have returned all the funds to the users.

And now when I see that somebody is ready to send 16BTC to a mixer without so much reputation. I am like  give me those coins and I will build a great business that will benefit all the participants. Well, of course it doesn't work like this.

Oh, forgot to mention. I also work for chipmixer.