Well, we all have or most of us have heard about a bitcoin mixer, if not then I, first of all, will explain what bitcoin mixing is so you have a better understanding how things work.
Bitcoin is pseudo anonymous, all transactions are written in the blockchain. Any person can obtain access to the history of money transfers from one address to another one. Bitcoin mixing provides you with an opportunity to protect your anonymity.
The idea is to let you delete any trace and let you keep your anonymity as it always was attended with Bitcoin. This can in a way keep you safe from hackers tracking big amounts of bitcoins and perhaps also make you safer beside deleting the trace.
Now Jambler is a well-known service where they collect investors and partners together to make one big mixing service. Investors invest bitcoin into the project and earn interest that way and partners either start a telegram bot or like me a website running on the Jambler system.
This website also contains a lot more information if you wanna learn more about what bitcoin mixing is as well the letter of guarantee.
Now how do partners earn? well Jambler have the fee they take, but you can choose to add between 2 to 10% on top of that which will be your cut, my site has 2% because I didn't start it to take all peoples money and also as Jambler said it could make people stop using your service taking a high fee.
You are provided with the template for the website if you are either lazy or do not know how to build your own using coding.