The world's largest bitcoin tumbling service has closed it's digital doors. According to Cointelegraph, it is because, "BitMixer is sending a message to other services still engaged in mixing saying: “I hope our decision will help to make Bitcoin ecosystem more clean and transparent. I hope our competitors will hear our message and will close their services too. Very soon this kind of activity will be considered as illegal in most countries.”
If you go to the bitmixer.io website, it seems more like the reason is that Monero has no competition in the anonymity department. They even refer you to this link: